Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
tranh luan » trinh luan, trinh luat, doanh luan
luan hung » luan chung, lan hung, luan ung
cong san » cong tac
tran cau » tran chau, toan cau, ran cau
ho lieu » so lieu, ho kieu, ho chieu
co lieu » cot lieu, co hieu, so lieu

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

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