Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
dong cong » duong cong, dung cong, dang cong
chang dam » chang ham, hang dam, hang dau
anh hung » anh huong, manh hung, anh dung
hung cua » huong cua, chung cua, khung cua
cua dong » chua dong, cua cong, cua dang
cong tan » cong tac, cong san, cong thanh
than cap » khan cap, thanh lap, thanh cac

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 - anh hung cua dong cong tan ((than cap) or (chang dam))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - anh hung cua dong cong tan ((than cap) OR (chang dam)).
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - anh hung cua dong cong tan ((than cap) or (chang dam))*.