Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu tach » chiet tach, chieu sach, chiu trach
hanh trang » thanh trung, canh tranh, hanh trinh
hanh tang » anh tang, hanh mang, hanh tung
kha nang » phap nang, ky nang, ki nang
cong tac » cong ty
toan cau » toan cao, toan ban, toan tap

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 tach - ((hanh tang) OR (hanh trang)) kha nang ((cong san) OR (cong tac)) toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu tach - ((hanh tang) OR (hanh trang)) kha nang ((cong san) or (cong tac)) toan cau~".
• Adding a wildcard symbol may retrieve word variants: theo chieu tach - ((hanh tang) OR (hanh trang)) kha nang ((cong san) or (cong tac)) toan cau*.