Perhaps you should try some spelling variations:
trung tran » trung tuan, trung thanh, trung tam
hoc tieng » hoc hien
van thanh » ban thanh, van tuan
dung cong » dung trong
cong dan » cong san, cong tan, huong dan
dan khan » dan khanh, dan chan, dan than
khan cap » khan ap, than cap, khoan cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc tieng anh - thanh ((trung tran) or (van thanh)) dung cong dan khan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc tieng anh - thanh ((trung tran) OR (van thanh)) dung cong dan khan cap.
• Adding a wildcard symbol may retrieve word variants: hoc tieng anh - thanh ((trung tran) or (van thanh)) dung cong dan khan cap*.