Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
quang cao » nang cao, quang nam
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
nung cao » nang cao, nhung cau, luong cao
cong van » cong vang, cong san, song van
van toan » van tuan, van tan, van thanh
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: ho chieu sach - thanh ((quang cao) or (nung cao)) dung cong van toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh ((quang cao) OR (nung cao)) dung cong van toan ban.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh ((quang cao) or (nung cao)) dung cong van toan ban*.