Perhaps you should try some spelling variations:
nhung hang » nhung bang, nhung cang, nhung hanh
nhung lang » nhung van, nhanh lang, nhung cong
hieu lang » chieu sang, hieu quang, nhieu tang
hanh tran » hanh trang, thanh tran, hanh tram
tran tuan » tran xuan, tran quang, tran thanh
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 - hanh tran tuan ((nhung hang) OR (nhung lang)) luan van ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - hanh tran tuan ((nhung hang) OR (nhung lang)) luan van ban*".