Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu hanh » chieu xanh, dieu hanh, hien hanh
hanh trang » thanh trung, canh tranh, hanh trinh
vat dung » van dung, viet dung, mat duong
cong tac » cong ty
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban
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 chieu hanh - hanh trang ((va dung) OR (vat dung)) cong tac ((toan cau) OR (toan tap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu hanh - hanh trang ((va dung) or (vat dung)) cong tac ((toan cau) OR (toan tap))~".
• Adding a wildcard symbol may retrieve word variants: theo chieu hanh - hanh trang ((va dung) or (vat dung)) cong tac ((toan cau) OR (toan tap))*.