Perhaps you should try some spelling variations:
chiet tach » chieu sach
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
bang cong » dang cong, bang song, hang cong
tinh cua » trinh cua, sinh cua, tinh chat
cua bang » chua bang, cua ban, cua dang
cong van » cong vang, cong san, song van
ban cau » bang cau, van cau, ban dau
ban can » ban dan, ban hang, ban hanh

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 ((chinh sach) OR (chiet tach)) - hanh tinh cua bang cong van ((ban cau) OR (ban can))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chinh sach) or (chiet tach)) - hanh tinh cua bang cong van ((ban cau) OR (ban can))~".
• Adding a wildcard symbol may retrieve word variants: ho ((chinh sach) or (chiet tach)) - hanh tinh cua bang cong van ((ban cau) OR (ban can))*.