Quầy hành lý thất lạc ở gần sảnh đến.

Quầy means counter, desk, or service booth. In this sentence, it refers to a place in an airport where you go for help or service.

So quầy hành lý thất lạc is the lost luggage counter/desk.

Vietnamese often builds noun phrases by putting the main noun first and then adding words that describe it.

Here:

• quầy = counter / desk
• hành lý = luggage / baggage
• thất lạc = lost / missing

So literally, it is something like:

• counter + luggage + lost

A natural English rendering is lost luggage counter or lost baggage desk.

Thất lạc means lost, misplaced, or missing.

In this sentence, it describes hành lý (luggage), so hành lý thất lạc means lost luggage.

Vietnamese does not always separate adjectives and verbs in the same way English does. Depending on context, thất lạc can behave like a descriptive word meaning lost.

Vietnamese does not use articles like English a, an, and the.

So Quầy hành lý thất lạc can mean:

• the lost luggage counter
• a lost luggage counter

Which one sounds best depends on context. In an airport sign or direction, English usually uses the: The lost luggage counter is near the arrivals hall.

Because là is usually not used before a location phrase.

In English, we say:

• The counter is near the arrivals hall.

In Vietnamese, location is often expressed directly:

• Quầy hành lý thất lạc ở gần sảnh đến.

Here, ở gần gives the location, so là is not needed.

A learner-friendly pattern is:

• [thing] + ở + [place] = [thing] is at/in [place]

Ở gần means near or more literally be located near.

• ở = at / in / located at
• gần = near

Together, ở gần emphasizes location: is near.

Yes, in many situations you can also say just gần:

• Quầy hành lý thất lạc gần sảnh đến.

That is also understandable and natural.
Using ở gần sounds a little fuller and clearer, especially for learners.

Sảnh means hall, lobby, or terminal hall.
Đến means arrive or arrival, depending on context.

So sảnh đến means:

• arrival hall
• arrivals hall
• arrivals area

This is similar to how Vietnamese often makes travel-related compounds:

• ga đến = arrivals station/area
• cổng đến = arrival gate
• sảnh đến = arrivals hall

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

So:

• sảnh đến = hall of arrivals / arrival hall
• not đến sảnh

English often puts the describing noun first (arrival hall), but Vietnamese usually puts it after.

This noun-first pattern is very common:

• phòng họp = meeting room
• vé máy bay = airplane ticket
• sảnh đến = arrival hall

Yes. Hành lý can be translated as either luggage or baggage.

In airport contexts:

• hành lý xách tay = carry-on baggage
• hành lý ký gửi = checked baggage
• hành lý thất lạc = lost baggage / lost luggage

Both English translations are fine, though airports often prefer baggage in formal signage.

The structure is:

• Quầy hành lý thất lạc = subject
• ở gần = location phrase meaning is near
• sảnh đến = place

So the pattern is:

• [Subject] + ở gần + [Place]

This is a very useful structure for giving directions:

• Nhà vệ sinh ở gần thang máy. = The restroom is near the elevator.
• Cổng số 5 ở gần quầy thông tin. = Gate 5 is near the information desk.

It works for both, but it sounds especially natural as a spoken direction or a written informational sentence.

For a short sign, Vietnamese might also use a shorter label, such as:

• Quầy hành lý thất lạc
• Hành lý thất lạc
• Quầy hành lý thất lạc gần sảnh đến

But the full sentence Quầy hành lý thất lạc ở gần sảnh đến is perfectly normal if someone is telling you where it is.

The most important information is usually:

• quầy hành lý thất lạc = what place we are talking about
• sảnh đến = the reference point

So the sentence would naturally sound like:

• Quầy hành lý thất lạc ở gần sảnh đến.

If someone is answering a question like Where is the lost luggage desk?, the stress may fall a bit more on gần sảnh đến to highlight the location.