Perhaps you should try some spelling variations:
professional perspectives » regional perspectives, professional practice
professional expertise » professional experience
professional practices » professional practice, professional services
personal perspectives » personal perspective, regional perspectives, national 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 (personal experience))) OR (((((professional perspectives) OR (personal perspectives))) OR (professional practices)))) distilled.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((professional expertise) or (personal experience))) or (((((professional perspectives) OR (personal perspectives))) or (professional practices)))) distilled".
• Adding a wildcard symbol may retrieve word variants: ((((professional expertise) or (personal experience))) or (((((professional perspectives) OR (personal perspectives))) or (professional practices)))) distilled*.