Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh luan » trinh luan, trinh luat, doanh luan
kieu tinh » lieu tinh, trieu tinh, diep tinh
luan nang » luan van, van nang, luan san
nang cong » nang song, dang cong, bang cong
dan toan » dan than, manh toan, xuan toan
van toan » van tuan, van tan, van thanh

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: theo ((kieu tinh) OR (cuu tinh)) - hanh tranh luan nang cong ((dan toan) OR (van toan)) cau~.
• Adding a wildcard symbol may retrieve word variants: theo ((kieu tinh) or (cuu tinh)) - hanh tranh luan nang cong ((dan toan) or (van toan)) cau*.