Perhaps you should try some spelling variations:
thanh trung » thanh tung
hien xanh » hien hanh, hien nhanh, chieu xanh
trong tac » trong cac, tuong tac, trong tan
trung ha » trung hoc, trung tam, trung cap
tac than » tac thanh, tam than, tac nhan
than cap » khan cap, thanh lap, thanh cac
ha dung » hai dung, hat dung, kha dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien xanh - thanh trung ha dung trong tac than cap~.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - thanh trung ha dung trong tac than cap*.