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
dung cong » dung trong
cap dung » ap dung, cao dung, chan dung
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap

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

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