Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh va » trinh van, trinh vat, trinh ve
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
than ban » thanh ban, toan ban, than man
ho chau » ho chu, o chau, khoa chau
ha chau » hat chau, a chau, lai chau

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: ((ho chau) OR (ha chau)) tinh - hanh trinh va nhung ((cong dan) OR (cong san)) than ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chau) or (ha chau)) tinh - hanh trinh va nhung ((cong dan) OR (cong san)) than ban~".
• Adding a wildcard symbol may retrieve word variants: ((ho chau) or (ha chau)) tinh - hanh trinh va nhung ((cong dan) OR (cong san)) than ban*.