Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
khoan cam » khoa cam, khoan va, phan cam
trinh va » trinh van, trinh vat, trinh ve
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
khan cap » khan ap, than cap, phan cac
ha tinh » va tinh, may tinh
va hang » van hang, va nang, va lang
ho ha » pho ha, ho hap, o ha

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