Perhaps you should try some spelling variations:
professions » professional, professionals, professors
professionals » professional, professionalals, professorals
professorals » professors, professionalo, professional
professionally » professional, professionalism, professionalally, professorally
professionalally » professional, professionalism, professionnelle, professionalalally, professoralally
professionalalals » professionalalalals, professoralalals
profession » professional, professor
demographics" » geographic"

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 ((professionals OR professorals) or ((professionalalals or ((professionally or professionalally) or professionalally)) or professoralalals))) or profession): training, education and (demographics" or demographic")~.
• If you are trying to use Boolean operators, they must be ALL CAPS: "((professions OR ((professionals OR professorals) OR ((professionalalals OR ((professionally OR professionalally) OR professionalally)) OR professoralalals))) OR profession): training, education AND (demographics" or demographic").
• The words AND, OR and NOT may confuse the search; try adding quotes: "\"((professions or ((professionals OR professorals) or ((professionalalals or ((professionally or professionalally) or professionalally)) or professoralalals))) or profession): training, education and (demographics\" or demographic\")".
• Removing quotes may allow a broader search: ((professions or ((professionals OR professorals) or ((professionalalals or ((professionally or professionalally) or professionalally)) or professoralalals))) or profession): training, education and (demographics or demographic ).
• Adding a wildcard symbol may retrieve word variants: "((professions or ((professionals OR professorals) or ((professionalalals or ((professionally or professionalally) or professionalally)) or professoralalals))) or profession): training, education and (demographics" or demographic")*.