Perhaps you should try some spelling variations:
tranh luan » trinh luan, trinh luat, doanh luan
cong thanh » dong thanh, cong trinh, cong tan
hoc thieu » toc thieu, hoc hien
luan dung » lan dung, luan dong, luan hung
dung cong » dung trong
ho chieu » theo chieu, doi chieu, mot chieu
ran cau » ban cau, can cau, tran chau
van cau » van dau, van hau, van chat

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 (hoc thieu)) tinh - canh tranh luan dung cong thanh ((ran cau) OR (van cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) tinh - canh tranh luan dung cong thanh ((ran cau) OR (van cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (hoc thieu)) tinh - canh tranh luan dung cong thanh ((ran cau) OR (van cau))".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc thieu)) tinh - canh tranh luan dung cong thanh ((ran cau) OR (van cau))*.