Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
manh trung » manh tung, thanh trung, manh hung
tieu xanh » tieu danh, chieu xanh, dieu hanh
vat dung » van dung, viet dung, mat duong
cong dan » cong san, cong tan, huong dan
than cau » toan cau, phan cau, than cap
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 - manh trung ((va dung) OR (vat dung)) ((cong dan) OR (cong thanh)) than cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - manh trung ((va dung) OR (vat dung)) ((cong dan) or (cong thanh)) than cau~".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - manh trung ((va dung) OR (vat dung)) ((cong dan) or (cong thanh)) than cau*.