Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
cong chuc » cong thuc, cong cu, cong cua
chuc dang » chuc nang, chuc danh, thuoc dang
dang cong » dung cong
anh cong » hanh cong, anh dong, thanh cong
van tan » van tuan, van ban, van tai

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 xanh - anh cong chuc dang cong ((xuan toan) OR (van tan)) cao~.
• Adding a wildcard symbol may retrieve word variants: theo chieu xanh - anh cong chuc dang cong ((xuan toan) or (van tan)) cao*.