Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
canh manh » lanh manh, canh tranh, cach mang
cong dan » huong dan, cong dong, cong tac
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
toan cao » toan ban, toan tap
manh va » hanh va, anh va, minh va

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 - canh manh va nhung ((((cong dan) OR (cong tan))) OR (cong san)) toan cao~.
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - canh manh va nhung ((((cong dan) or (cong tan))) or (cong san)) toan cao*.