Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
anh tang » anh bang, anh dang, anh sang
anh nang » ganh nang, anh bang, anh dang
vat dung » van dung, va dung, viet dung
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
toan ban » van ban

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