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