Dịch vụ khách hàng xem thông tin cá nhân.

Yes. Dịch vụ khách hàng is a single noun phrase meaning customer service.

• dịch vụ = service
• khách hàng = customer / customers

Together, they mean the service or department that deals with customers. In this sentence, that whole phrase is the subject.

Vietnamese usually puts the main noun first and the describing noun after it.

So:

• dịch vụ khách hàng = service + customer = customer service
• thông tin cá nhân = information + personal = personal information

This is the opposite of a lot of English noun order, so it can feel backwards at first.

Because Vietnamese normally follows Subject + Verb + Object order, just like basic English.

So in this sentence:

• Dịch vụ khách hàng = subject
• xem = verb
• thông tin cá nhân = object

So the structure is Customer service + views/checks + personal information.

Here xem means something like view, look at, check, or review.

It does not usually mean passive see in this kind of sentence. In practical or administrative contexts, xem thông tin cá nhân usually means to view/check personal information.

Because xem is a direct verb in Vietnamese. It can take its object directly.

So Vietnamese says:

• xem thông tin cá nhân

not something like xem at thông tin cá nhân.

This is similar to other common patterns:

• xem phim = watch a movie
• xem email = check email
• xem hồ sơ = review a file/profile

Vietnamese usually does not use articles the way English does.

So a noun like thông tin cá nhân can mean:

• personal information
• the personal information

depending on context.

The same applies to dịch vụ khách hàng. Vietnamese relies much more on context than English for definiteness.

No. Vietnamese verbs do not change form for tense the way English verbs do.

So xem by itself can mean different times depending on context:

• views
• is viewing
• will view

If the speaker wants to make time clearer, they can add words such as:

• đã = past
• đang = in progress
• sẽ = future

For example:

• Dịch vụ khách hàng đang xem thông tin cá nhân. = Customer service is viewing personal information.

For the same reason as dịch vụ khách hàng: Vietnamese usually puts the main noun first and the modifier after it.

• thông tin = information
• cá nhân = personal / individual

So thông tin cá nhân literally follows the pattern information personal, but in natural English that becomes personal information.

Because cá nhân is not showing possession here. It is describing the type of information.

So:

• thông tin cá nhân = personal information

But if you want to say whose personal information it is, then you use của:

• thông tin cá nhân của khách hàng = the customer’s personal information
• thông tin cá nhân của tôi = my personal information

So của is for ownership or relation, not for forming the phrase personal information itself.

By itself, khách hàng can mean customer or customers depending on context. Vietnamese nouns usually do not change form for singular and plural.

But in this sentence, khách hàng is part of the fixed phrase dịch vụ khách hàng, so you should understand the whole thing as customer service, not as a separately counted noun.

It is understandable, but Vietnamese speakers might sometimes use a slightly more specific expression depending on the situation.

Common alternatives include:

• Bộ phận dịch vụ khách hàng xem thông tin cá nhân. = The customer service department views personal information.
• Nhân viên dịch vụ khách hàng xem thông tin cá nhân. = A customer service employee views personal information.
• Chăm sóc khách hàng is also a very common way to say customer service/customer care.

So the original sentence is fine, but real-life Vietnamese often adds a little more detail about who exactly is doing the action.