Perhaps you should try some spelling variations:
doanh tranh » doanh thanh, canh tranh, doanh doanh
theo chieu » theo tieu, theo chu, thi chieu
tranh luan » trinh luan, trinh luat, doanh luan
luan tang » luan nang, lan tang, xuan trang
tang cong » tang cuong, trang cong, dang cong
ho chieu » hoc thieu, doi chieu, mot chieu
cong van » cong vang, cong san, song van
hang dau » hang va
hang tai » hang va, dung tai

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 (theo chieu)) xanh - doanh tranh luan tang cong van ((hang dau) OR (hang tai))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) xanh - doanh tranh luan tang cong van ((hang dau) OR (hang tai)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (theo chieu)) xanh - doanh tranh luan tang cong van ((hang dau) OR (hang tai))".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (theo chieu)) xanh - doanh tranh luan tang cong van ((hang dau) OR (hang tai))*.