Perhaps you should try some spelling variations:
tranh luan » trinh luan, trinh luat, doanh luan
hanh tranh » canh tranh, hanh trinh, hanh trang
chinh cong » thanh cong
trinh cong » trinh dung
chao chu » cho chu, cao cho, chao xu
van toan » van tuan, van tan, van thanh
toan cau » toan cao, toan ban, toan tap
cua chu » sua chua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((chao chu) or (cua chu)) xanh - hanh tranh luan ((chinh cong) or (trinh cong)) van toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((chao chu) OR (cua chu)) xanh - hanh tranh luan ((chinh cong) OR (trinh cong)) van toan cau.
• Adding a wildcard symbol may retrieve word variants: ((chao chu) or (cua chu)) xanh - hanh tranh luan ((chinh cong) or (trinh cong)) van toan cau*.