Perhaps you should try some spelling variations:
theo chiet » theo chieu, thep thiet
chiet tach » chieu sach
hanh trinh » canh tranh, hanh chinh
trinh hoan » trinh han, trinh hoa, trinh toan
hoan nhung » hoa nhung, hon nhung, doanh nhung
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
than cau » toan cau, phan cau, than cap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo chiet tach - hanh trinh hoan nhung ((cong dan) or (cong san)) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chiet tach - hanh trinh hoan nhung ((cong dan) OR (cong san)) than cau.
• Adding a wildcard symbol may retrieve word variants: theo chiet tach - hanh trinh hoan nhung ((cong dan) or (cong san)) than cau*.