Perhaps you should try some spelling variations:
tranh luan » trinh luan, trinh luat, doanh luan
cong thanh » dong thanh, cong trinh, truong thanh
doi chieu » doc hieu, doi chi, mot chieu
luan hang » luan nang, luan han, luan hung
ho chieu » theo chieu, hoc thieu, mot chieu
cong tan » cong tac, cong san, cong ty
than cap » khan cap, thanh lap, thanh cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (doi chieu)) xanh - canh tranh luan hang ((cong tan) OR (cong thanh)) than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) xanh - canh tranh luan hang ((cong tan) OR (cong thanh)) than cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (doi chieu)) xanh - canh tranh luan hang ((cong tan) OR (cong thanh)) than cap".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (doi chieu)) xanh - canh tranh luan hang ((cong tan) OR (cong thanh)) than cap*.