Perhaps you should try some spelling variations:
thanh truong » thanh trung, thanh thuong, thanh tung
truong ton » truong son, truong tinh, truong bo
thuc tien » thuc hien
tong cong » trong cong, cong cong, dung cong
ton tong » toan tong, ton trong, ton thuong
dan than » dan chan, ban than, dan toan
van than » van thanh, van thang, van tuan

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: ((theo tcvn) OR (thuc tien)) hanh - thanh truong ton tong cong ((dan than) OR (van than)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo tcvn) or (thuc tien)) hanh - thanh truong ton tong cong ((dan than) OR (van than)) cau~".
• Adding a wildcard symbol may retrieve word variants: ((theo tcvn) or (thuc tien)) hanh - thanh truong ton tong cong ((dan than) OR (van than)) cau*.