Perhaps you should try some spelling variations:
theo chinh » thien chinh, te chinh, che chinh
hanh trinh » canh tranh, hanh chinh
trinh quan » tinh quang, trinh luat, trinh han
quan chong » quen chong, quang cuong, quang thong
cong dan » cong tan, huong dan, cong dong
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 chinh sach - hanh trinh quan chong ((cong dan) OR (cong san)) ((toan tap) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chinh sach - hanh trinh quan chong ((cong dan) OR (cong san)) ((toan tap) or (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: theo chinh sach - hanh trinh quan chong ((cong dan) OR (cong san)) ((toan tap) or (toan ban))*.