Perhaps you should try some spelling variations:
truong trong » truong trung, thuong trong, trung trong
chieu sach » chinh sach, chieu sang, chieu xanh
hanh trung » thanh trung, hanh trang, manh trung
trung cac » truong cac, trung cap, trong cac
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) or (chiet tach)) - hanh trung cac truong trong ((van hanh) OR (ban hanh)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chiet tach)) - hanh trung cac truong trong ((van hanh) OR (ban hanh)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) or (chiet tach)) - hanh trung cac truong trong ((van hanh) OR (ban hanh)) cau".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (chiet tach)) - hanh trung cac truong trong ((van hanh) OR (ban hanh)) cau*.