Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
thanh tung » thanh cong
hieu thong » lieu thong, hieu tuong, sieu thong
cong thanh » dong thanh, cong trinh, truong thanh
doi chieu » doc hieu, doi chi, ho chieu
tung hieu » trung hieu, dung hieu, tang hieu
thanh cac » hanh cac, thanh bac, thanh ca
cong tan » cong tac, cong san, cong ty
phan cau » phan dau, phan cac, phan tu

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 tung hieu thong ((cong tan) or (cong thanh)) ((phan cau) or (thanh cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - thanh tung hieu thong ((cong tan) OR (cong thanh)) ((phan cau) OR (thanh cac)).
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - thanh tung hieu thong ((cong tan) or (cong thanh)) ((phan cau) or (thanh cac))*.