Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
trung hoa » trung ha
trung hoc » trung quoc
dung cong » dung trong
cong tac » cong ty
phap cau » phan cau, phap ca, phap cac
pha cau » phan cau, pha cac, phan cac

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 - thanh ((trung hoa) or (trung hoc)) dung cong tac ((pha cau) OR (phap cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - thanh ((trung hoa) OR (trung hoc)) dung cong tac ((pha cau) OR (phap cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - thanh ((trung hoa) or (trung hoc)) dung cong tac ((pha cau) OR (phap cau))".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - thanh ((trung hoa) or (trung hoc)) dung cong tac ((pha cau) OR (phap cau))*.