Perhaps you should try some spelling variations:
trung han » trung phan, trung nhan, trung van
trong van » trong cac
trong dan » trong dang, trong san, trong tan
30 trieu » 25 trieu
trung ha » trung hoc, trung tam, trung cap
dan toan » van toan, dan than, manh toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: 30 trieu tinh - thanh ((((trung han) or (trung ha))) or (trong van)) dung trong dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: 30 trieu tinh - thanh ((((trung han) OR (trung ha))) OR (trong van)) dung trong dan toan ban.
• Adding a wildcard symbol may retrieve word variants: 30 trieu tinh - thanh ((((trung han) or (trung ha))) or (trong van)) dung trong dan toan ban*.