Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
ho chieu » theo chieu, hoc thieu, doi chieu
cong tac » cong ty
than cau » phan cau, than cap, thanh chau
toan cau » toan cao, toan ban, toan tap
tung va » trung va, tuong va, dung 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: ho chieu sach - thanh tung va hang ((cong san) OR (cong tac)) ((than cau) OR (toan cau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - thanh tung va hang ((cong san) OR (cong tac)) ((than cau) or (toan cau))~".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh tung va hang ((cong san) OR (cong tac)) ((than cau) or (toan cau))*.