Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh tran » hanh trang, thanh tran, hanh tram
tong cong » trong cong, dung cong, dang cong
cong cong » cong dong, trong cong, dung cong
tan thanh » tran thanh, tang thanh, toan thanh
thanh cha » thanh ha, thanh nha, thanh phan
25 trieu » 30 trieu
tran van » luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: 25 trieu tinh - hanh tran van ((nhung cong) or (((tong cong) or (cong cong)))) tan thanh cha~.
• If you are trying to use Boolean operators, they must be ALL CAPS: 25 trieu tinh - hanh tran van ((nhung cong) OR (((tong cong) OR (cong cong)))) tan thanh cha.
• Adding a wildcard symbol may retrieve word variants: 25 trieu tinh - hanh tran van ((nhung cong) or (((tong cong) or (cong cong)))) tan thanh cha*.