Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
hanh tran » hanh trang, thanh tran, hanh tram
tran van » luan van
ban hang » ngan hang
van tan » van tuan, van ban, van tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu xanh - hanh tran van ((nhung cong) or (trong cong)) ((van tan) or (ban hang)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh tran van ((nhung cong) OR (trong cong)) ((van tan) OR (ban hang)) ban.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh tran van ((nhung cong) or (trong cong)) ((van tan) or (ban hang)) ban*.