Perhaps you should try some spelling variations:
hanh trinh » hanh chinh
tieu xanh » tieu danh, chieu xanh, dieu hanh
vat dung » van dung, viet dung, mat duong
cong ban » cong bang, cong san, cong tan
ban than » ban thanh, van thanh, ban hang
than tap » toan tap, han tap, phan tap
va dung » van dung, va duong, va ung

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 - ((hanh trinh) OR (canh tranh)) ((va dung) OR (vat dung)) cong ban than tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - ((hanh trinh) OR (canh tranh)) ((va dung) or (vat dung)) cong ban than tap~".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - ((hanh trinh) OR (canh tranh)) ((va dung) or (vat dung)) cong ban than tap*.