Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
manh trung » thanh trung, manh hung, sinh trung
manh tung » manh hung, thanh tung
bang cong » dang cong, bang song, hang cong
cua bang » chua bang, cua ban, cua dang
cong van » cong vang, cong san, song van
van tan » van tuan, van ban, van tai
tan cao » toan cao, tao cao, tay cao

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((dieu hanh) or (chieu sach)) - ((manh trung) OR (manh tung)) cua bang cong van tan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((dieu hanh) OR (chieu sach)) - ((manh trung) OR (manh tung)) cua bang cong van tan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((dieu hanh) or (chieu sach)) - ((manh trung) OR (manh tung)) cua bang cong van tan cao".
• Adding a wildcard symbol may retrieve word variants: theo ((dieu hanh) or (chieu sach)) - ((manh trung) OR (manh tung)) cua bang cong van tan cao*.