Perhaps you should try some spelling variations:
professionalisering education » professionalism education, professionals education
professionalisering » professionalsisering
professional » professionals

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: ((professionalisering education) OR (professional education)).
• Adding a wildcard symbol may retrieve word variants: ((professionalisering education) or (professional education))*.