Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
thanh tran » thanh trang, thanh toan, thanh tra
doi chieu » doc hieu, doi chi, ho chieu
tran van » luan van
van hung » van dung, manh hung, van duong
cong tac » cong ty
than cao » toan cao, thai cao, than cap

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 sang - thanh tran van hung ((((cong tac) or (huong dan))) or (cong san)) than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - thanh tran van hung ((((cong tac) OR (huong dan))) OR (cong san)) than cao.
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - thanh tran van hung ((((cong tac) or (huong dan))) or (cong san)) than cao*.