Perhaps you should try some spelling variations:
tranh luan » trinh luan, trinh luat, doanh luan
doi khieu » doi chieu, doc hieu, doi hien
luan dong » luan cong, quan dong, luan nong
dong cong » duong cong, dung cong, dang cong
cong tac » cong ty
tac than » tac thanh, tam than, tac nhan
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi khieu) or (doi khi)) xanh - canh tranh luan dong cong tac than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi khieu) OR (doi khi)) xanh - canh tranh luan dong cong tac than cau.
• Adding a wildcard symbol may retrieve word variants: ((doi khieu) or (doi khi)) xanh - canh tranh luan dong cong tac than cau*.