Perhaps you should try some spelling variations:
thanh tung » thanh cong
cong thanh » dong thanh, cong trinh, cong tan
theo hieu » theo chieu, theo tieu, thien hieu
hieu lang » chieu sang, hieu quang, nhieu tang
tung van » trung van, tang van, dung van
van dung » van dong, xay dung, tin dung
cong tac » cong ty
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo hieu lang - thanh tung van dung ((cong tac) or (cong thanh)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo hieu lang - thanh tung van dung ((cong tac) OR (cong thanh)) toan cau.
• Adding a wildcard symbol may retrieve word variants: theo hieu lang - thanh tung van dung ((cong tac) or (cong thanh)) toan cau*.