There are different Business Directories :

Try all different Business Directories offered by
Every Engine has different results,
Most companies are listed in serveral directories
but the results are not the same ...

Find Products
find products and order them directly (example Schampoo, Perfume, Shoes)

Product Yellow Pages by Amazon

Video about the Amazon Pop Up Store @ Cremerie de Paris
Cremerie de Paris is one of the World's most famous places for Brand Expos
and since 1671 a istoric Telecom Hotspot,
home of the Vietnam Whitepages.
The Amazon Pop Up Store is one of many iconic Brand Expos
in the long history of the home of

Find Products / Companies via Yellow Pages B2C
Business to Consumers
Companies froviding Products or Sevices for End Users
(example Restaurant)

Find Products / Companies via Yellow Pages B2B
Business to Business
Companies from Vietnam providing Products for Professionals
(example Food producer)
Vietnam B2B
Vietnam B2B

Find Products / Companies via Financial Yellow Pages
Financial Infos
Contact Details
All kind of Companies from Vietnam

Find Companies via Gov Pages
search through the Government
Government of Vietnam
Vietnam Gov Search
this search engine goes through
all the Indonesian ministeries,
maybe the company you are looking for
has been mentioned at some point.

Find Companies in other Countries
search in another country
Phone Book of the
Phone Book of the
Annuaire du
maybe the person you are looking for has moved
and can be cound through the directory of another country

good luck ...