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
anh mang » hanh mang, anh bang, anh dang
mang cua » manh cua, dung cua, ban 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
khan dam » thanh dam, chang dam, khanh nam

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