Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
trang va » tran van, hang va
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
toan cao » toan ban, toan tap
luan » quan, lan

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 - thanh ((trang va) OR (luan van)) nhung ((cong dan) OR (cong tan)) toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - thanh ((trang va) or (luan van)) nhung ((cong dan) OR (cong tan)) toan cao~".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - thanh ((trang va) or (luan van)) nhung ((cong dan) OR (cong tan)) toan cao*.