The name is the only part of a brand that travels through ears and mouths without anyone seeing anything. Words are how the brand talks every day, in places where no designer stands by. Vietnamese places its own rule on both: the script separates every syllable while meaning lives in the whole word, and every greeting to a customer forces a choice of relationship.
Quick read: the core statement, when it comes up, and the test to take home. Full read also opens the reasoning, the limits and the sources. Each principle comes before its practices, so the numbers do not run in sequence.
Change a name only when it blocks a specific path you can name; if the name looks old, refresh the visuals, because changing the name cuts the thread that ties together every existing memory.
When it comes upWhen naming a business or a new product line, and when the owner wants to change the name at the same time as redoing the identity.
Resolution
Change a name only when it blocks a specific path you can name, never because it looks old; what looks old belongs to the visuals, and visuals can be refreshed without touching the name (1.08).
Full reasoning
Two goods pulling against each other
Keeping the old name keeps everything tied to it: word of mouth, online reviews, documents, regular customers. Changing it removes a name that is in the way: it clashes with someone else's, has a bad meaning in a new market, or is too narrow once the business enters other fields.
Why it holds
Shapes and colours only work when people can see them; a name works even when nobody sees anything: when customers recommend the business to friends, when they type into a search box, when they phone in an order. Every memory of the business hangs on the name, so the name is the foundation layer in exactly the sense of 6.01: the slowest and most expensive layer to change. A name also lives in places design cannot reach: the business registration certificate, the company seal, invoices, contracts, bank accounts, trademark filings, domain names. Changing the visuals fixes what customers see; changing the name means fixing what customers search for, say and sign, and every place not yet updated is a place where customers wander off to a name nobody answers any more.
When it fails
A name that infringes someone else's rights, or is caught in a trademark dispute, must change however much it has built up; consult an intellectual property specialist before deciding. For a new business that has not yet sold or registered, changing the name is still cheap, and that is the time to check it most thoroughly (7.04).
What it costs
Living with a flawed name: a bit long, a bit hard to read, no longer covering the whole range of business. The refresh effort must go into visuals and words, refreshing part by part rather than replacing everything (the core colour stays, per 8.02), and that looks less impressive than a new name.
Sources
Al Ries and Jack Trout, Positioning: The Battle for Your Mind, McGraw-Hill, 1981, chapter The power of the name
Jenni Romaniuk, Building Distinctive Brand Assets, Oxford University Press, 2018
Check a name before falling in love with it: read it over the phone, search trademarks, search business names and domains, ask what it means in each region.
When it comes upWhen there is a list of candidate names, before presenting them to the owner and before designing any visuals for a name.
A test to take home
Work from cheapest to most expensive; a name stops at whichever step it fails. (1) Read the name over the phone to three people in the north, centre and south of Vietnam and ask them to write it down: names with the hỏi and ngã tones, with the pairs tr and ch, s and x, l and n, or with easily confused rhymes will be written several ways, which means customers will search several ways. (2) Ask people in each region, and in foreign markets if you plan to sell there, whether the name suggests another meaning, especially a vulgar or unlucky one. The version without diacritics is checked separately under 9.10. (3) Search the trademark database of the Vietnam Intellectual Property Office, in the exact classes of goods and services to be registered, for identical names and names that sound similar. (4) Search the business name on the national business registration portal, and search the domain name and account names on the social networks you will use. Pass: the name passes all four steps without explanation. Fail: it must be followed by it is spelled like this every time it is said. Self-searches are only for early elimination; for a name you intend to register, have an intellectual property specialist assess its protectability before investing in visuals.
Vietnamese is written syllable by syllable but meaning lives in the whole word; names and copy must keep words intact when lines break, when text is shortened or abbreviated.
When it comes upSetting headlines, slogans and product names on packaging and websites; setting character limits for display names; shortening long names; creating abbreviations.
Resolution
In names, headlines, slogans and anywhere text is short but weighty, form gives way to meaning; in long body text at reading size, let the software break lines naturally.
Full reasoning
Two goods pulling against each other
On one side is the flexibility of written Vietnamese: every syllable is separated by a space, so a line can be cut anywhere, margins stay even, boxes stay tidy, and foreign software handles it without adjustment. On the other is meaning: many common words consist of two or more syllables, and splitting them leaves each syllable standing alone with a different meaning.
Why it holds
English uses the space to mark word boundaries, so software treats every space as a permitted break. Vietnamese uses the space to separate syllables, so the same rule falls in the middle of words. Nguyễn Tài Cẩn (1975) treated the syllable (tiếng) as the basic unit of Vietnamese grammar: each syllable is at once a unit of reading and a morpheme, the smallest unit carrying meaning; and his book places compound words in a separate part right after the syllable. A compound is where two or three syllables join into one unit, and its meaning is often not shared out among the syllables: thương hiệu (brand) is not thương (love) plus hiệu (sign). A headline line ending in thương with the next line opening on hiệu: a skimming reader takes meaning from the first line first, and thương alone is a different word. The same mechanism runs when a marketplace truncates a long product name with an ellipsis, when an account name field allows a set number of characters, when someone takes the first letter of each syllable as an abbreviation. The fault is not in the software; it is that nobody told the software where words begin and end.
When it fails
In long text at reading size, readers read sentence by sentence rather than skimming lines: forcing words to stay together everywhere makes a ragged right margin and patchy white space, losing more than it gains. Borrowed names or coined names written as one word have no syllable boundaries to keep.
What it costs
Headlines must be set by hand or the software must be instructed, and sometimes a sentence must be rewritten to fit the box instead of letting words fall where they may. System character limits must be set by the longest real name, not by a default number.
Sources
Nguyễn Tài Cẩn, Ngữ pháp tiếng Việt: Tiếng, từ ghép, đoản ngữ (Vietnamese grammar: syllables, compounds, phrases), Đại học và Trung học chuyên nghiệp, 1975
Unicode Standard Annex #14, Unicode Line Breaking Algorithm
Break headline lines by units of meaning, never between the two syllables of one word.
When it comes upWebsite headlines, publication covers, slogans.
A test to take home
Read each line of the headline as a sentence of its own. A line that ends with the first syllable of a two-syllable word (thương / hiệu, doanh / nghiệp) is changing the meaning, not just looking bad. Printed matter keeps words together with the no-break command of the layout software. On websites, let the browser balance headline lines, and use non-breaking spaces (a space that glues two syllables so the browser may not break there) only for proper names and short compounds; scattered everywhere, they make headlines overflow on phones. Check again at phone width. Pass: at phone width and at the real print size, no line ends with half a word, and no text box overflows. Fail: each headline has to be fixed by hand after the page is live, or the error is only seen when a customer sends a screenshot.
Use an abbreviated name only when the abbreviation can be read aloud in exactly one way, or when customers already call the business that.
When it comes upA long business name of many syllables, and an owner who wants a short version for the logo, domain or sign.
A test to take home
(1) Write the abbreviation on paper and have five people who do not know the business read it aloud. Vietnamese letters have several readings (bê or bờ, đê or đờ), and some people read them by English letter names; an abbreviation that gets two or three readings from five people will live with two or three names in customers' mouths. (2) Ask them what it stands for: if nobody can guess, the meaning is entirely lost and the abbreviation must carry itself from scratch like a new name. (3) Count how many other businesses already use that string of letters: two- or three-letter strings are usually registered by many, so they are hard to distinguish and hard to protect (search as in step 3 of 7.04). (4) If the abbreviation is built syllable by syllable, check that the cut does not split a word (7.02). Pass: one reading, or exactly the name customers already use. Fail: the full name must be printed alongside everywhere for people to understand the abbreviation.
A Vietnamese brand voice begins with forms of address, because in Vietnamese choosing a pronoun is choosing a relationship: who is older, who is younger, close or distant.
When it comes upWriting a verbal identity guide, customer reply scripts, website copy, packaging, messages and call centre scripts. A touchpoint here is any place a customer meets the brand.
Resolution
Choose by the relationship the brand can sustain at its hardest touchpoint, usually when the customer is angry, not at its easiest, which is advertising.
Full reasoning
Two goods pulling against each other
Close forms of address, such as anh chị (older brother, older sister) and em (younger sibling), are warm and affectionate, suited to selling. Distant forms, such as quý khách (valued customer) and chúng tôi (we), are safe with any age, suited to paperwork and complaints.
Why it holds
Vietnamese addresses the other person mostly with kinship terms, even between people who are not related, and each term declares who is older and who ranks higher (Lương Văn Hy, 1990). English has one word for the second person; Vietnamese forces the speaker to choose a role before saying the first sentence. So brand voice does not begin with the adjectives in a guide but with the pair of address terms: choosing em takes the junior role and promises indulgence; choosing quý khách keeps distance and promises propriety; choosing an equal pair promises familiarity and accepts that some will find it too casual. With the wrong pair, no adjective can rescue the voice: a perfectly worded apology that addresses the customer in a role unsuited to their age still reads as an insult. And the pair must match at both ends: addressing the customer one way while referring to yourself in another relationship makes every sentence lopsided.
When it fails
Legal documents, contracts and invoices have their own register (party A, party B, the customer); brand voice is not pulled into them. A brand selling to a very narrow, uniform age group takes less risk with close forms of address.
What it costs
Each pair of address terms closes some doors: choosing close loses some older or institutional customers; choosing distant loses warmth. Staff must relearn how to speak, and newcomers drift back to their own habits unless there is a written rule (7.07).
Sources
Lương Văn Hy (Hy Van Luong), Discursive Practices and Linguistic Meanings: The Vietnamese System of Person Reference, John Benjamins, 1990
Write a one-page rule for forms of address at each touchpoint, so a new employee can answer a complaint in the right voice without asking anyone.
When it comes upAfter the voice is settled, before handing the verbal identity guide to sales, customer care and content writers.
A test to take home
(1) Make a one-page table: each row a touchpoint (signs and packaging, website, posts, messages, call centre, emails, invoices, complaint replies); columns for what to call the customer, what to call ourselves, how to address someone whose age and gender are unknown, whether to follow the customer when they refer to themselves differently or keep the rule, and banned words. (2) Write two sample sentences for each row: a pleasant one (greeting, thanks) and a hard one (refusal, apology). (3) Give the table to someone who has not read the guide and ask them to answer three hypothetical messages from an angry customer. Pass: all three answers use the same pair of address terms and the correct row. Fail: the writer has to ask, or switches forms of address midway through a conversation.
Sales copy takes the buyer's words, because buyers search for, remember and talk about products in their own words, not in the words the business invents.
When it comes upWriting product introductions, homepage headlines, marketplace product descriptions, sales scripts, slogans; and when the business finds its copy correct yet customers still ask again after reading it.
Resolution
Sales copy, product descriptions, headlines and every place where buyers are searching take the buyer's words; the brand's own words go in only one or two places where the brand needs to own an idea, such as the slogan or the name of a product line, and those words must stand beside the buyer's words until buyers use them on their own.
Full reasoning
Two goods pulling against each other
The buyer's words are understood instantly and match what they type into the search box and say when recommending to friends. The brand's own words are distinctive, ownable, and can lead buyers to a new way of thinking about the product.
Why it holds
A brand is what outsiders remember and believe (0.1), and that memory is called up by situations, worries and needs that buyers name in their own heads: a child coughing at night, a Tết gift for the boss, a work shirt that needs no ironing, fish sauce for braising fish. Romaniuk calls these category entry points, the moments when people start thinking about buying a category, and a brand comes to mind when it is linked to those entry points. Words the business invents, such as comprehensive solution or superior experience, match no entry point, so after reading them there is nothing in memory for them to hook onto. Buyers also pay very little attention (0.2): a sentence using exactly the words they are thinking is understood in one glance; one that must be translated gets skimmed past. Copywriting has turned gathering customers' exact words into a method (Joanna Wiebe calls it voice-of-customer research); what is particular to Vietnamese is that customers' words vary by region (heo or lợn for pork, bắp or ngô for corn), customers often search without diacritics, and when those words become sentences addressed to customers they bring a pair of address terms with them (7.03).
When it fails
A product that opens a new category has buyers who do not yet have words for it, and the brand must coin them; then use the buyer's words for the worry and the reason to buy, while the brand coins the name of the product. A brand deliberately shifting its positioning may find old customers' familiar words pulling it back to the old place. When customers call a whole category by the leading brand's name, do not take that word. Words customers say are not necessarily words the business may advertise, especially therapeutic claims or efficacy guarantees; there the category's law applies (2.05), not customers' words.
What it costs
Copy sounds less lofty, closer to everyday speech, and sometimes resembles that of competitors listening to the same customers. Effort must go into collecting customers' words, and collecting them again when customers change how they talk, instead of writing once from a desk.
Sources
Jenni Romaniuk, Better Brand Health: Measures and Metrics for a How Brands Grow World, Oxford University Press, 2023
Joanna Wiebe, Copyhackers, guides on voice-of-customer research, copyhackers.com
Set the sales copy beside a list of words customers have actually said; any word customers have never used belongs to the business: rewrite it in customers' words, except the brand's deliberately owned words.
When it comes upWriting slogans, product introductions, homepage headlines, sales scripts.
A test to take home
(1) Collect customers' words: online reviews, product enquiry messages, notes from front-line sellers (2.07). (2) Underline the words customers use to name the product, the worry and the reason to buy. (3) Set the sales copy, headlines and product descriptions in use beside that list: any word that does not appear once in customers' words belongs to the business, not the buyer. (4) Rewrite in customers' words, keeping the agreed pair of address terms (7.07). (5) The slogan and positioning line may keep at most one owned word, the rest remains customers' words; other exceptions follow the limits of 7.11. Pass: read the new sentence to a regular customer and they nod without asking what it means. Fail: a beautiful sentence that customers have to translate. Quoting a customer's exact words with their name or photo requires that person's permission, under the Personal Data Protection Law (Law 91/2025/QH15) and its guiding documents, and the Civil Code's provisions on rights to one's image; using another person's image for commercial purposes by default also requires payment unless the two sides agree otherwise. Ask in writing or by a message that can be kept, stating where and for how long it will be used. What customers say about the effects of medicines, cosmetics, health supplements or medical services is further restricted by sector law (2.05), so consult a specialist before putting it in advertising; using customers' vocabulary requires quoting nobody.
Sources
Sources
Joanna Wiebe, Copyhackers, guides on voice-of-customer research, copyhackers.com
Vietnam Civil Code No. 91/2015/QH13, Article 32 (rights of individuals to their image)
Vietnam Personal Data Protection Law No. 91/2025/QH15
