Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » theo tieu, ho chieu, theo chu
chieu sang » chieu sach, chieu xanh, hieu lang
trung hay » trung ha, trung hai, trung gay
hay dung » xay dung, gay dung, hai dung
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
than cap » khan cap, thanh lap, thanh cac
thai cao » tai cao, thoai cac, thuat cao

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 sang - thanh trung hay dung ((cong tan) OR (cong san)) ((than cap) or (thai cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sang - thanh trung hay dung ((cong tan) OR (cong san)) ((than cap) OR (thai cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sang - thanh trung hay dung ((cong tan) OR (cong san)) ((than cap) or (thai cao))".
• Adding a wildcard symbol may retrieve word variants: theo chieu sang - thanh trung hay dung ((cong tan) OR (cong san)) ((than cap) or (thai cao))*.