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 dong, qua dung, cua rung
cua dang » cua cong, cua ban
cong dan » cong san, cong tan, huong dan
khan ap » khan cap, han ap, khan dam

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 dang)) cong dan ((thanh cac) or (khan ap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - anh tang ((cua dung) OR (cua dang)) cong dan ((thanh cac) OR (khan ap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - anh tang ((cua dung) OR (cua dang)) cong dan ((thanh cac) or (khan ap))".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - anh tang ((cua dung) OR (cua dang)) cong dan ((thanh cac) or (khan ap))*.