If you know an address of residence or business in VN, how can you get its phone number?

Question

it likes in US, you can call 411 or 800-555-1212 to ask for phone number of a business or residence if you know the address.

Answer 1

call the operator an give her the adress and she give she the phone number

Answer 2

http://www.reversephonedirectory.com/

Answer 3

call 1080

Answer 4

try whitepages.com