Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
thanh cac » hanh cac, thanh bac, thanh ca
anh tang » anh bang, anh dang, anh nang
cua dung » cua dang, cua dong, qua dung
cong dan » cong san, cong tan, huong dan
khan cap » khan ap, than cap, khoan cam

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 tang ((cua dung) or (cua ban)) cong dan ((thanh cac) or (khan cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - anh tang ((cua dung) OR (cua ban)) cong dan ((thanh cac) OR (khan cap)).
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - anh tang ((cua dung) or (cua ban)) cong dan ((thanh cac) or (khan cap))*.