Perhaps you should try some spelling variations:
nhung dong » nhung don, nhung cong, nhung dung
dong thanh » truong thanh
thanh tran » thanh trang, thanh toan, thanh tra
hanh luan » khanh luan, hang luan, hanh luat
van nhung » van nhuong, va nhung, van hung
tran tap » toan tap, tran tan, tran tuan
tu sach » thu sach, su sach, tu cach
te sach » toc sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((tu sach) or (te sach)) - hanh luan van nhung dong thanh tran tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((tu sach) OR (te sach)) - hanh luan van nhung dong thanh tran tap.
• Adding a wildcard symbol may retrieve word variants: theo ((tu sach) or (te sach)) - hanh luan van nhung dong thanh tran tap*.