Perhaps you should try some spelling variations:
tranh luan » trinh luan, trinh luat, doanh luan
doi chieu » doc hieu, doi chi, ho chieu
luan dung » lan dung, luan dong, luan hung
dung cong » dung trong
cong tac » cong ty
than cau » toan cau, than cap, thanh chau
phan cau » phan dau, phan cac, phan tu

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

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