Perhaps you should try some spelling variations:
22public welfare » republic welfare, publick welfare
case studies » case study
2f great » 2 great, 21 great, 25 great
23 great » 3 great, 13 great, 23 green
2f case » 20 case, 21 case, 22 case

Try widening your search to All Fields.

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

• If you are trying to use Boolean operators, they must be ALL CAPS: %((22public welfare) OR (public welfare)) administration %((2f great) OR (23 great)) britain %2f case studies%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((22public welfare) OR (public welfare)) administration %((2f great) or (23 great)) britain %2f case studies%22".
• Adding a wildcard symbol may retrieve word variants: %((22public welfare) OR (public welfare)) administration %((2f great) or (23 great)) britain %2f case studies%22*.