Perhaps you should try some spelling variations:
chieu sach » chiet tach, chieu sang, chieu xanh
cong thanh » dong thanh, cong trinh, truong thanh
cua nhung » va nhung
anh tang » anh bang, anh dang, anh nang
tang cua » mang cua, hang cua, tang luan
cong tan » cong tac, cong san, cong ty
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: theo ((chieu sach) or (chinh sach)) - anh tang cua nhung ((cong tan) OR (cong thanh)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chinh sach)) - anh tang cua nhung ((cong tan) OR (cong thanh)) toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) or (chinh sach)) - anh tang cua nhung ((cong tan) OR (cong thanh)) toan tap".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (chinh sach)) - anh tang cua nhung ((cong tan) OR (cong thanh)) toan tap*.