Perhaps you should try some spelling variations:
chieu sach » chiet tach, chieu sang, chieu xanh
hanh trung » thanh trung, hanh trang, danh trung
manh trung » manh tung, thanh trung, manh hung
cap trong » cay trong, ca trong, cad trong
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan ban » van ban

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

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