Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
hanh dung » thanh dung, anh dung, hanh dong
cong cong » cong dong, trong cong, dung cong
chao chu » cho chu, cua chu, cao cho
dung cua » dung luan, dung cho
tac toan » tap toan, hach toan, tich toan
tam toan » tap toan, tam than, pham toan

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 chieu) OR (chao chu)) sach - hanh dung cua cong cong ((tac toan) OR (tam toan)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (chao chu)) sach - hanh dung cua cong cong ((tac toan) OR (tam toan)) cau~".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (chao chu)) sach - hanh dung cua cong cong ((tac toan) OR (tam toan)) cau*.