Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trinh van » trinh han, trinh quan, trinh toan
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
trinh va » trinh vat, trinh ve, trinh vi
cong ban » cong bang, cong san, cong tan
ban than » ban thanh, van thanh, ban hang
than cap » khan cap, thanh lap, thanh cac

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 - hanh ((trinh va) OR (trinh van)) dung cong ban than cap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh ((trinh va) OR (trinh van)) dung cong ban than cap".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh ((trinh va) OR (trinh van)) dung cong ban than cap*.