Perhaps you should try some spelling variations:
tranh luan » trinh luan, trinh luat, doanh luan
hieu lang » chieu sang, hieu quang, nhieu tang
luan ban » luan van, luan san, luan han
ban cong » bang cong, van cong, phan cong
cong dan » cong san, cong tan, huong dan
toan cau » toan ban, toan tai
toan cao » toan ban
toan tap » toan ban
ho hieu » ho chieu, hoi hieu, nho hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu lang - canh tranh luan ban cong dan ((toan cau) or (((toan cao) or (toan tap))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - canh tranh luan ban cong dan ((toan cau) OR (((toan cao) OR (toan tap)))).
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - canh tranh luan ban cong dan ((toan cau) or (((toan cao) or (toan tap))))*.