Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
trung ha » trung hoc, trung tam, trung cap
cong dan » cong san, cong tan, huong dan
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban
tang ha » lang ha, tang ma, tang van

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sach - hanh ((tang ha) or (trung ha)) trong cong dan ((toan cau) OR (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - hanh ((tang ha) OR (trung ha)) trong cong dan ((toan cau) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - hanh ((tang ha) or (trung ha)) trong cong dan ((toan cau) OR (toan tap))".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - hanh ((tang ha) or (trung ha)) trong cong dan ((toan cau) OR (toan tap))*.