Perhaps you should try some spelling variations:
hieu xanh » chieu xanh, hieu manh, hieu nganh
tranh cua » doanh cua, manh cua
cong danh » cuong danh, cong thanh, cong khanh
doc hieu » toc thieu, hoc thieu, hoc hien
cua dang » cua cong, cua ban
cong dan » cong san, cong tan, huong dan
toan tap » toan ban

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: doc hieu xanh - canh tranh cua dang ((cong danh) OR (cong dan)) toan tap~.
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - canh tranh cua dang ((cong danh) or (cong dan)) toan tap*.