Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hieu manh » chieu xanh, hieu nganh, dieu hanh
chinh cua » chinh ca, chinh sua, hinh cua
cua thong » cua thuong, cua khong, cua tong
cong van » cong vang, song van, cong tan
cong san » cong tac
ban ban » ban banh, van ban, can ban

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 ((hieu manh) OR (chieu sach)) - hanh chinh cua thong ((cong van) OR (cong san)) ban ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu manh) or (chieu sach)) - hanh chinh cua thong ((cong van) OR (cong san)) ban ban~".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu manh) or (chieu sach)) - hanh chinh cua thong ((cong van) OR (cong san)) ban ban*.