Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh luan » trinh luan, trinh luat, doanh luan
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
cua sinh » hoa sinh, va sinh
tac toan » tap toan, tam toan, hach toan
toan tap » toan ban
tinh » trinh, dinh, minh

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((cuu tinh) OR (cua sinh)) - hanh tranh luan ((nhung cong) OR (thong cong)) tac toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((cuu tinh) or (cua sinh)) - hanh tranh luan ((nhung cong) OR (thong cong)) tac toan tap~".
• Adding a wildcard symbol may retrieve word variants: ho ((cuu tinh) or (cua sinh)) - hanh tranh luan ((nhung cong) OR (thong cong)) tac toan tap*.