Perhaps you should try some spelling variations:
thanh trung » thanh tung
chua tinh » cua tinh, thuat tinh, chua benh
trung vat » trung va, trung van, trong vat
dung cong » dung trong
cha tinh » chau tinh, cham tinh, chai tinh
vat dung » van dung, va dung, viet dung
dan than » ban than, van than, dan toan
dan chan » dan gian, dan ca, van chat

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 ((chua tinh) OR (cha tinh)) - thanh trung vat dung cong ((dan than) OR (dan chan)) cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chua tinh) OR (cha tinh)) - thanh trung vat dung cong ((dan than) or (dan chan)) cao~".
• Adding a wildcard symbol may retrieve word variants: ho ((chua tinh) OR (cha tinh)) - thanh trung vat dung cong ((dan than) or (dan chan)) cao*.