Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
tranh cua » doanh cua, manh cua
cua dong » chua dong, cua cong, cua dang
cong tan » cong san, cong thanh, cong ty
cong tac » cong ty
tran tap » toan tap, tran tan, tran tuan

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 - canh tranh cua dong ((cong tan) OR (cong tac)) tran tap~.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - canh tranh cua dong ((cong tan) or (cong tac)) tran tap*.