Perhaps you should try some spelling variations:
hieu sach » chieu sach, hieu cach, dien sach
tranh cua » doanh cua, manh cua
dong cong » duong cong, dung cong, dang cong
thuat bao » thuat giao, thuat do, thuat o
thuat bai » thuyet bai, thuat xay
doc hieu » toc thieu, hoc thieu, hoc hien
cua dong » chua dong, cua cong, cua dang
cong san » cong tac
chat cau » chat cam, chat cao, chat va

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu sach - canh tranh cua dong cong san ((chat cau) or (((thuat bao) or (thuat bai))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu sach - canh tranh cua dong cong san ((chat cau) OR (((thuat bao) OR (thuat bai)))).
• Adding a wildcard symbol may retrieve word variants: doc hieu sach - canh tranh cua dong cong san ((chat cau) or (((thuat bao) or (thuat bai))))*.