Perhaps you should try some spelling variations:
trung tran » trung thanh, trung tam, hung tran
trung tuan » trung thanh, trung tam, tran tuan
hoc tieng » hoc hien
tieng han » tieng anh
dung cong » dung trong
cong van » cong vang, cong san, song van
van than » van thanh, van thang, van tuan
than cap » khan cap, thanh lap, thanh cac

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 han - thanh ((trung tran) or (trung tuan)) dung cong van than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc tieng han - thanh ((trung tran) OR (trung tuan)) dung cong van than cap.
• Adding a wildcard symbol may retrieve word variants: hoc tieng han - thanh ((trung tran) or (trung tuan)) dung cong van than cap*.