Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
hang cong » dang cong, hang nong, bang cong
tuong va » truong va, thuong va, luong va
trung ha » trung hoc, trung tam, trung cap
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap

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 ((tuong va) or (trung ha)) hang cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - thanh ((tuong va) OR (trung ha)) hang cong dan toan cao.
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - thanh ((tuong va) or (trung ha)) hang cong dan toan cao*.