Perhaps you should try some spelling variations:
thanh truong » thanh thuong, thanh tung, thanh huong
thanh trung » thanh tung
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
trong van » trong cac
van toan » van tuan, van tan, van thanh
toan cao » toan ban, toan tap
va dung » van dung, va duong, vat dung

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 ((chieu xanh) OR (chieu sach)) - ((thanh truong) OR (thanh trung)) va dung trong van toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) or (chieu sach)) - ((thanh truong) OR (thanh trung)) va dung trong van toan cao~".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (chieu sach)) - ((thanh truong) OR (thanh trung)) va dung trong van toan cao*.