Perhaps you should try some spelling variations:
theo chiet » theo chieu, thep thiet
chiet tach » chieu sach
trinh cua » trinh luat, trinh quan, trinh luan
tinh cua » sinh cua, tinh chat, tranh cua
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
toan tap » toan 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 chiet tach - thanh ((tinh cua) OR (trinh cua)) nhung ((cong dan) OR (cong tan)) toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chiet tach - thanh ((tinh cua) or (trinh cua)) nhung ((cong dan) OR (cong tan)) toan tap~".
• Adding a wildcard symbol may retrieve word variants: theo chiet tach - thanh ((tinh cua) or (trinh cua)) nhung ((cong dan) OR (cong tan)) toan tap*.