Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
manh trung » manh tung, manh hung, sinh trung
cua dung » cua dang, cua dong, qua dung
van hanh » van thanh, van anh, van ban
ban hanh » ban hang

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

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