Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
tranh va » tranh van, trang va, trinh va
cong dan » huong dan, cong dong, cong tac
cong san » cong tac
cong tan » cong tac, cong thanh, cong ty
toan ban » van ban
va hang » van hang, va nang, va lang

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 - canh tranh va hang ((((cong dan) or (cong san))) or (cong tan)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - canh tranh va hang ((((cong dan) OR (cong san))) OR (cong tan)) toan ban.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - canh tranh va hang ((((cong dan) or (cong san))) or (cong tan)) toan ban*.