Perhaps you should try some spelling variations:
thien thanh » tien thanh, hien hanh, chien tranh
tranh luan » trinh luan, trinh luat, doanh luan
tong cong » trong cong, cong cong, dung cong
tan thanh » tran thanh, tang thanh, toan thanh
van tong » van thong, van trong, van tuong
cong tan » cong tac, cong san, cong thanh
thanh ca » thanh cha, thanh cac, thanh ha

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: hoc ((thien thanh) OR (thi thanh)) - tranh luan van tong cong tan thanh ca~.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien thanh) or (thi thanh)) - tranh luan van tong cong tan thanh ca*.