Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
dung cong » dung trong
dan thoai » van thoai, than thoai, dien thoai
thoai cac » tai cac, thong cac, tho cac
ho chieu » theo chieu, hoc thieu, doi chieu
trung ha » trung hoc, trung cap
cong dan » cong san, cong tan, huong dan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu tinh - thanh ((trung tam) or (trung ha)) dung cong dan thoai cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu tinh - thanh ((trung tam) OR (trung ha)) dung cong dan thoai cac.
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - thanh ((trung tam) or (trung ha)) dung cong dan thoai cac*.