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
theo lieu » theo tieu, theo chieu, thi lieu
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: ((theo lieu) OR (theo yeu)) tinh - hanh tranh luan trong cong tap toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo lieu) OR (theo yeu)) tinh - hanh tranh luan trong cong tap toan cau".
• Adding a wildcard symbol may retrieve word variants: ((theo lieu) OR (theo yeu)) tinh - hanh tranh luan trong cong tap toan cau*.