Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
dang cong » dung cong
cong tac » cong ty
cong tan » cong san, cong thanh, cong ty
tan than » tan thanh, tan tran, ban than
than cao » toan cao, thai cao, than cap
cong va » dong va, cong ha, luong va

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu xanh) or (chieu sang)) - thanh ((cong va) OR (cong tac)) dang cong tan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu xanh) OR (chieu sang)) - thanh ((cong va) OR (cong tac)) dang cong tan than cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu xanh) or (chieu sang)) - thanh ((cong va) OR (cong tac)) dang cong tan than cao".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) or (chieu sang)) - thanh ((cong va) OR (cong tac)) dang cong tan than cao*.