Perhaps you should try some spelling variations:
thap chieu » phap hieu, thau hieu, tam chieu
chieu sang » chieu sach, chieu xanh, hieu lang
tan thang » toan thang, tran thang, van thang
cong sang » cong san, cong vang, cong bang
cong lang » cong vang, cong luong, cong quang
cong tan » cong tac, cong san, cong thanh
than cau » toan cau, phan cau, 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: thap chieu sang - thanh cong tan thang ((cong sang) or (cong lang)) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thap chieu sang - thanh cong tan thang ((cong sang) OR (cong lang)) than cau.
• Adding a wildcard symbol may retrieve word variants: thap chieu sang - thanh cong tan thang ((cong sang) or (cong lang)) than cau*.