Perhaps you should try some spelling variations:
tieu xanh » tieu danh, chieu xanh, dieu hanh
canh tinh » hanh tinh, manh tinh, canh tranh
dung cong » dung trong
ban than » ban thanh, van thanh, ban hanh
ban hang » ngan hang
tinh ve » trinh ve, tinh ven, dinh ve
ve dung » ve duong, ve rung, va 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: theo tieu xanh - canh tinh ve dung cong ((ban than) OR (ban hang)) cau~.
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - canh tinh ve dung cong ((ban than) or (ban hang)) cau*.