Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
thanh dung » thanh duong, thanh tung, thanh hung
cua nhung » va nhung
dung cua » dung luan, dung cho
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
toan tap » toan ban

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