Perhaps you should try some spelling variations:
thanh trung » thanh tung
dan trinh » dan tinh, van trinh, hanh trinh
trung vap » trung cap, trung va, trung van
dung cong » dung trong
vap dung » van dung, ap dung, va dung
cong tac » cong ty
tac than » tac thanh, tam than, tac nhan
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: (hoa OR khoa) dan trinh - thanh trung vap dung cong tac than cap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(hoa OR khoa) dan trinh - thanh trung vap dung cong tac than cap".
• Adding a wildcard symbol may retrieve word variants: (hoa OR khoa) dan trinh - thanh trung vap dung cong tac than cap*.