Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
doi chieu » doc hieu, doi chi, ho chieu
anh tang » anh dang, anh nang, anh sang
anh bang » anh hoang, anh quang, tinh bang
cong tan » cong tac, cong san, cong thanh
than cap » thanh lap, thanh cac, than cua
khan cap » khan ap, khoan cam, phan 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 tang) OR (anh bang)) va nhung cong tan ((than cap) or (khan cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - ((anh tang) OR (anh bang)) va nhung cong tan ((than cap) OR (khan cap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - ((anh tang) OR (anh bang)) va nhung cong tan ((than cap) or (khan cap))".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - ((anh tang) OR (anh bang)) va nhung cong tan ((than cap) or (khan cap))*.