Perhaps you should try some spelling variations:
professions » profession, professional
professorals » professors, professionalo, professional
professionally » professional, professionalism
professionals » professional
professionalsalsalsalalals » professionalalsalsalalals
professionalals » professional, professionalism, professionalize
professionalizing » professionalization, professionalism

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: "((professions or (((professorals or (professionally or (professionals or professionalals))) or professionalizing) or (professionalsalsalsalalals or professoralalals))) or professor): training, education and (geographic" or demographic")~.
• If you are trying to use Boolean operators, they must be ALL CAPS: "((professions OR (((professorals OR (professionally OR (professionals OR professionalals))) OR professionalizing) OR (professionalsalsalsalalals OR professoralalals))) OR professor): training, education AND (geographic" or demographic").
• Removing quotes may allow a broader search: ((professions or (((professorals or (professionally or (professionals or professionalals))) or professionalizing) or (professionalsalsalsalalals or professoralalals))) or professor): training, education and (geographic or demographic ).
• Adding a wildcard symbol may retrieve word variants: "((professions or (((professorals or (professionally or (professionals or professionalals))) or professionalizing) or (professionalsalsalsalalals or professoralalals))) or professor): training, education and (geographic" or demographic")*.