Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
thanh tan » thanh toan, thanh tuan, thanh san
van nhung » van nhuong, va nhung, van hung
ho chieu » theo chieu, doi chieu, mot chieu
dan toan » van toan, dan than, manh toan
tan van » tran van, tang 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: ((ho chieu) OR (hoc thieu)) tinh - thanh tan van nhung cong ((dan toan) or (anh tuan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) tinh - thanh tan van nhung cong ((dan toan) OR (anh tuan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (hoc thieu)) tinh - thanh tan van nhung cong ((dan toan) or (anh tuan)) cau".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (hoc thieu)) tinh - thanh tan van nhung cong ((dan toan) or (anh tuan)) cau*.