Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
hinh dinh » binh dinh, trinh dinh, hinh anh
nong tan » nong dan, nong san, nong thanh
nong van » song van, nong dan, nong san
cong tan » cong tac, cong san, cong thanh
toan tap » toan ban
dinh va » dinh van, dinh ve, tinh va
va hang » van hang, va nang, va lang

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - hinh dinh va hang ((((nong tan) OR (nong van))) OR (cong tan)) toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - hinh dinh va hang ((((nong tan) OR (nong van))) or (cong tan)) toan tap~".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hinh dinh va hang ((((nong tan) OR (nong van))) or (cong tan)) toan tap*.