Perhaps you should try some spelling variations:
tranh luan » trinh luan, trinh luat, doanh luan
hieu luat » hieu qua
dinh dung » dinh duong, dinh hung, tinh dung
van hieu » cao hieu
van dien » van tien, van hien, van kien
dien van » dien va, dien dan, dien ban
canh » anh, can, hanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( canh tranh luan van hieu luat ) or ( dinh dung luan van dien van ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( canh tranh luan van hieu luat ) OR ( dinh dung luan van dien van ))*.