Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
hanh nang » anh nang, ganh nang, hanh mang
cao hang » cao dang, cao tang, cao bang
cong dan » huong dan, cong dong, cong tac
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
toan ban » van ban

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 sach - hanh nang cao hang ((((cong dan) OR (cong tan))) OR (cong san)) toan ban~.
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - hanh nang cao hang ((((cong dan) or (cong tan))) or (cong san)) toan ban*.