Perhaps you should try some spelling variations:
chieu sach » chiet tach, chieu sang, chieu xanh
canh hanh » xanh hanh, canh tranh, danh thanh
dung cong » dung trong
cong tinh » cong trinh, cong vinh, long tinh
toan ban » van ban
hanh va » hang va, hanh vi
va dung » van dung, va duong, vat dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chieu sach) or (chinh sach)) - canh hanh va dung cong tinh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sach) OR (chinh sach)) - canh hanh va dung cong tinh toan ban.
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sach) or (chinh sach)) - canh hanh va dung cong tinh toan ban*.