Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
chiet tach » chieu sach
thanh tung » thanh cong
nhung cong » dung cong, thong cong, hang cong
cong ban » cong bang, cong san, cong tan
than cau » toan cau, phan cau, than cap
tung va » trung va, tuong va, dung va
khan ap » khan cap, han ap, khan dam

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sang) or (chiet tach)) - thanh tung va nhung cong ban ((than cau) or (khan ap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chiet tach)) - thanh tung va nhung cong ban ((than cau) OR (khan ap)).
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (chiet tach)) - thanh tung va nhung cong ban ((than cau) or (khan ap))*.