Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hoang van » hang va
van nhung » van nhuong, va nhung, van hung
theo chu » theo chieu, theo yeu, thep cho
chao chu » cua chu, cao cho, chao xu
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap
cho chu » cho thue

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((((theo chu) OR (chao chu))) OR (cho chu)) sang - minh hoang van nhung cong tac toan cau~.
• Adding a wildcard symbol may retrieve word variants: ((((theo chu) or (chao chu))) or (cho chu)) sang - minh hoang van nhung cong tac toan cau*.