Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
lanh manh » lanh tranh, lan anh, van manh
cong tac » cong ty
chung tu » chung cu, thong tu
manh va » hanh va, anh va, minh va
va dung » van dung, va duong, vat dung

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 xanh) or (chieu sang)) - lanh manh va dung ((cong san) OR (cong tac)) chung tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu xanh) OR (chieu sang)) - lanh manh va dung ((cong san) OR (cong tac)) chung tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu xanh) or (chieu sang)) - lanh manh va dung ((cong san) OR (cong tac)) chung tu".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu xanh) or (chieu sang)) - lanh manh va dung ((cong san) OR (cong tac)) chung tu*.