Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
thanh dong » thanh duong, thanh cong, hanh dong
tong cong » trong cong, cong cong, dung cong
dong che » dong chen, duong che, dong cho
che tong » che cong, chet trong, chep xong
cong tan » cong tac, cong san, cong thanh
than cap » thanh lap, thanh cac, than cua
khan cap » khan ap, khoan cam, phan cac

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