Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hoac tinh » hoa tinh, hoat tinh, hoc tinh
trinh cua » tinh cua, trinh luat, trinh quan
cua khong » hua khong, cua phuong, cua thuong
doi hoac » doi hoa, doi hoat, doi thoai
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh

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: doi hoac tinh - hanh trinh cua khong ((cong dan) OR (cong tan)) ((toan ban) OR (van ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi hoac tinh - hanh trinh cua khong ((cong dan) OR (cong tan)) ((toan ban) or (van ban))~".
• Adding a wildcard symbol may retrieve word variants: doi hoac tinh - hanh trinh cua khong ((cong dan) OR (cong tan)) ((toan ban) or (van ban))*.