Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
canh trinh » canh tranh, hanh trinh, canh tinh
trinh ha » trinh han, trinh hoa, trinh nha
cong dan » cong san, cong tan, cong dong
toan cau » toan cao, toan tap, toan tai
toan ban » van ban
ha bang » hai bang, ha tang, va bang

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 trinh ha bang ((cong dan) OR (huong dan)) ((toan cau) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - canh trinh ha bang ((cong dan) or (huong dan)) ((toan cau) OR (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - canh trinh ha bang ((cong dan) or (huong dan)) ((toan cau) OR (toan ban))*.