Perhaps you should try some spelling variations:
professional perspectives » professional practices, personal perspectives, professional practice
professional expertise » professional experience
regional perspectives » global perspectives, critical perspectives

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: ((((professional expertise) OR (professional perspectives))) OR (regional perspectives)) distilled.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((professional expertise) OR (professional perspectives))) or (regional perspectives)) distilled".
• Adding a wildcard symbol may retrieve word variants: ((((professional expertise) OR (professional perspectives))) or (regional perspectives)) distilled*.