Perhaps you should try some spelling variations:
thanh trung » thanh tung
hien hanh » dieu hanh
trong san » trong cac, cong san, dong san
lan dung » dan dung, lan hung, tan dung
van dung » van dong, xay dung, tin dung
san toan » van toan, dan toan, manh toan
toan ban » van ban

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: hoc hien hanh - ((canh tranh) OR (thanh trung)) ((lan dung) OR (van dung)) trong san toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien hanh - ((canh tranh) or (thanh trung)) ((lan dung) OR (van dung)) trong san toan ban~".
• Adding a wildcard symbol may retrieve word variants: hoc hien hanh - ((canh tranh) or (thanh trung)) ((lan dung) OR (van dung)) trong san toan ban*.