Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
cac phuong » cac truong
va phuong » va thuong
anh dang » anh dong, anh dung, anh bang
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan ban » van ban

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu xanh - anh dang ((va phuong) OR (cac phuong)) cong tac toan ban~".
• Adding a wildcard symbol may retrieve word variants: theo chieu xanh - anh dang ((va phuong) OR (cac phuong)) cong tac toan ban*.