Perhaps you should try some spelling variations:
thanh tran » thanh trang, thanh tra, thanh tuan
thanh toan » thanh hoa, thanh san, tinh toan
nhung don » nhung van, nhung bo
hang cong » dang cong, hang nong, bang cong
toc hieu » doc hieu, hoc thieu, thuc hieu
tran van » luan van
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc hieu) OR (toc thieu)) manh - thanh tran van ((nhung don) or (hang cong)) thanh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc hieu) OR (toc thieu)) manh - thanh tran van ((nhung don) OR (hang cong)) thanh toan cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc hieu) OR (toc thieu)) manh - thanh tran van ((nhung don) or (hang cong)) thanh toan cao*".