Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
thanh luan » tranh luan, thanh xuan, thanh tuan
nhung cong » dung cong, thong cong, hang cong
van nhung » van nhuong, va nhung, van hung
ho chieu » hoc thieu, doi chieu, mot chieu
san toan » van toan, manh toan, xuan toan
dan toan » van toan, dan than, manh toan

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 (theo chieu)) sach - thanh luan van nhung cong ((san toan) or (dan toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) sach - thanh luan van nhung cong ((san toan) OR (dan toan)) cao.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (theo chieu)) sach - thanh luan van nhung cong ((san toan) or (dan toan)) cao*.