Tôi muốn biết cửa hàng này có giao hàng đến nhà tôi hay không.

Tôi muốn biết means I want to know or, in many contexts, I’d like to know.

It is a very common way to introduce an indirect question in Vietnamese. Instead of asking the question directly, the speaker frames it as something they want to know.

• Tôi = I
• muốn = want
• biết = know

So the whole sentence is built like:

I want to know + whether...

This makes the sentence sound a bit softer and more formal than a blunt direct question.

cửa hàng này means this store/shop.

• cửa hàng = store, shop
• này = this

In Vietnamese, demonstratives like này usually come after the noun, not before it as in English.

So:

• cửa hàng này = this store
• literally: store this

This is normal Vietnamese word order.

giao hàng means to deliver goods or to do delivery.

• giao = deliver, hand over
• hàng = goods, merchandise

Together, giao hàng is a very common expression meaning deliver / make deliveries / offer delivery service.

In this sentence, it refers to the store delivering the purchased items to someone’s home.

Here, có helps form a yes/no possibility or existence question structure inside the sentence.

The pattern is:

có + verb ... hay không
= whether or not ...

So:

có giao hàng ... hay không
= whether it delivers ... or not

This có does not mean have in the usual possessive sense. It is part of the structure used to ask whether something does or does not happen.

hay không means or not.

It is very common in Vietnamese for indirect yes/no questions. The structure:

... có ... hay không
means
whether ... or not

So:

Tôi muốn biết cửa hàng này có giao hàng đến nhà tôi hay không.
= I want to know whether this store delivers to my home or not.

This is a standard and natural pattern.

Sometimes yes, but hay không is clearer and more complete in this kind of indirect question.

Compare:

• ... có giao hàng đến nhà tôi không? = Do they deliver to my home?
• ... có giao hàng đến nhà tôi hay không. = whether they deliver to my home or not

The version with không? is more like a direct yes/no question.
The version with hay không fits especially well after Tôi muốn biết... because it expresses whether or not.

đến nhà tôi means to my house/home.

• đến = to, to reach, to arrive at
• nhà tôi = my house / my home

So giao hàng đến nhà tôi means deliver to my home.

If you said giao hàng cho tôi, that would mean deliver to me, which is possible, but it does not emphasize the destination as clearly.
đến nhà tôi specifically focuses on home delivery.

Yes, in this context đến and tới are very similar and often interchangeable.

• đến nhà tôi = to my home
• tới nhà tôi = to my home

Both are natural. đến is often slightly more neutral or standard, but the difference here is small.

In this sentence, tôi is repeated because it serves two different roles:

• first tôi = the subject of muốn biết
• second tôi = shows whose house it is in nhà tôi

So:

• Tôi muốn biết = I want to know
• nhà tôi = my house

You generally should not omit the second tôi, because then nhà would just mean house/home without showing whose home it is.

Yes, it is natural and polite enough, especially in writing or careful speech.

It sounds a bit formal because of Tôi muốn biết.... In real conversation, people might also say:

• Tôi muốn hỏi cửa hàng này có giao hàng đến nhà tôi không.
  = I’d like to ask whether this store delivers to my home.

• Cho tôi hỏi cửa hàng này có giao hàng đến nhà tôi không?
  = May I ask if this store delivers to my home?

These can sound more conversational and customer-service-like.

A helpful breakdown is:

Tôi muốn biết
= I want to know

cửa hàng này
= this store

có giao hàng đến nhà tôi hay không
= whether it delivers to my home or not

So the full structure is:

I want to know + whether + this store + delivers to my home + or not.

Vietnamese often keeps this kind of logical structure very clearly.

Yes. A direct question would be:

Cửa hàng này có giao hàng đến nhà tôi không?
= Does this store deliver to my home?

This removes Tôi muốn biết and changes the sentence from an indirect question to a direct one.

So:

• Tôi muốn biết... hay không. = indirect: I want to know whether...
• ... có ... không? = direct: Does ... ?

It can mean both my house and my home, depending on context.

In this sentence, đến nhà tôi usually means to my home in the practical sense of home delivery. English often prefers home here, even though nhà literally relates to house/home.

So a natural translation is:

• deliver to my home rather than
• deliver to my house

Both are possible, but home often sounds more natural in English for delivery contexts.