Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, thi chieu
hanh dung » thanh dung, anh dung, hanh dong
theo chu » cho chu, chao chu, theo yeu
van cong » van dong, van phong, phan cong
dan toan » van toan, manh toan, xuan toan
dan than » dan chan, ban than, van than
luan » quan, lan

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chu) OR (theo chieu)) sach - hanh dung luan van cong ((dan toan) OR (dan than)) tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chu) or (theo chieu)) sach - hanh dung luan van cong ((dan toan) OR (dan than)) tap~".
• Adding a wildcard symbol may retrieve word variants: ((theo chu) or (theo chieu)) sach - hanh dung luan van cong ((dan toan) OR (dan than)) tap*.