Perhaps you should try some spelling variations:
thanh tran » thanh trang, thanh toan, thanh tra
cong thanh » dong thanh, cong trinh, cong tan
doi chieu » doc hieu, doi chi, ho chieu
van thong » van thuong, van phong, va thong
tran van » luan van
cong tac » cong ty
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: ((doi chieu) or (toc thieu)) xanh - thanh tran van thong ((cong tac) or (cong thanh)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (toc thieu)) xanh - thanh tran van thong ((cong tac) OR (cong thanh)) toan cao.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (toc thieu)) xanh - thanh tran van thong ((cong tac) or (cong thanh)) toan cao*.