Perhaps you should try some spelling variations:
van nhuong » van chuong, van phuong, van huong
hieu lang » chieu sang, hieu quang, nhieu tang
hanh tran » hanh trang, thanh tran, hanh tram
hoi hieu » hoi phieu, hoi tieu, moi hieu
tran van » luan van
cong dan » cong san, cong tan, cong dong
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoi hieu lang - hanh tran van nhuong ((cong dan) or (huong dan)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoi hieu lang - hanh tran van nhuong ((cong dan) OR (huong dan)) toan cau.
• Adding a wildcard symbol may retrieve word variants: hoi hieu lang - hanh tran van nhuong ((cong dan) or (huong dan)) toan cau*.