Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh luan » trinh luan, trinh luat, doanh luan
luan trong » quan trong, luat trong, luan tuong
thi lieu » tai lieu, thi lien, thi dieu
theo yeu » theo tieu, thiet yeu, theo chu
cong tap » cuong tap, cong tac, cong tan
tap toan » tap doan, tap quan, bai toan
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thi lieu) or (theo yeu)) tinh - hanh tranh luan trong cong tap toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thi lieu) OR (theo yeu)) tinh - hanh tranh luan trong cong tap toan cau.
• Adding a wildcard symbol may retrieve word variants: ((thi lieu) or (theo yeu)) tinh - hanh tranh luan trong cong tap toan cau*.