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
dong cong » duong cong, dung cong, dang cong
cua dong » chua dong, cua cong, cua dang
cong tac » cong ty
hang dau » hang va, hang tai

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 tac ((hang dau) OR (phan tu))~.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - canh tranh cua dong cong tac ((hang dau) or (phan tu))*.