Perhaps you should try some spelling variations:
tranh luan » trinh luan, doanh luan, tang luan
nhung cong » dung cong, thong cong, hang cong
cua sinh » hoa sinh, va sinh
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan tap » toan ban
tinh » dinh, minh, kinh

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) OR (trinh luat)) nhung cong san toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((cuu tinh) or (cua sinh)) - hanh ((tranh luan) OR (trinh luat)) nhung cong san toan tap~".
• Adding a wildcard symbol may retrieve word variants: ho ((cuu tinh) or (cua sinh)) - hanh ((tranh luan) OR (trinh luat)) nhung cong san toan tap*.