Perhaps you should try some spelling variations:
thanh trung » thanh tung
chau tinh » cuu tinh, ha tinh, cac tinh
trung vap » trung cap, trung va, trung van
dung cong » dung trong
ban thanh » ban hanh, ban hang
cua tinh » cua sinh, va tinh, ha tinh
vap dung » van dung, ap dung, va dung
ban than » van thanh, ban hang, ban hanh

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chau tinh) OR (cua tinh)) - thanh trung vap dung cong ((ban than) OR (ban thanh)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chau tinh) or (cua tinh)) - thanh trung vap dung cong ((ban than) OR (ban thanh)) cau~".
• Adding a wildcard symbol may retrieve word variants: ho ((chau tinh) or (cua tinh)) - thanh trung vap dung cong ((ban than) OR (ban thanh)) cau*.