Perhaps you should try some spelling variations:
thong song » thong cong, thong dong, thong hong
hanh tran » hanh trang, thanh tran, hanh tram
van thong » van thuong, van phong, va thong
30 trieu » 25 trieu
tran van » luan van
song van » hoang van, trong van, duong van
benh » binh
ngan » nganh, nhan

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

• Performing a fuzzy search may retrieve terms with similar spellings: 30 trieu tinh - hanh tran van thong song van ((tai benh) or (tai ngan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: 30 trieu tinh - hanh tran van thong song van ((tai benh) OR (tai ngan)).
• Adding a wildcard symbol may retrieve word variants: 30 trieu tinh - hanh tran van thong song van ((tai benh) or (tai ngan))*.