Perhaps you should try some spelling variations:
duong quang » dung quang, luong quang, luong quan
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
trong ban » trong san, trong tan, trong quan
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: doi chieu sach - thanh ((duong quang) OR (duong qua)) dung trong ban than cap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - thanh ((duong quang) OR (duong qua)) dung trong ban than cap".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh ((duong quang) OR (duong qua)) dung trong ban than cap*.