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 hang » anh hoang, anh hung, anh bang
cong san » cong tac
than cap » khan cap, thanh lap, thanh cac
hang ca » hang va, nang cao, hang tai
ca dong » cao dong, cau dong, cua dong

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