Perhaps you should try some spelling variations:
research procedures » search procedures, search procedure, research processes
research professor » research profession, research processes, search processor
research prozess » research progress, research propels, research processes
research process » research progress, research projects, research problems

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: (((( research professor ) OR ( research prozess ))) OR ((( research process ) OR ( research procedures )))).
• Adding a wildcard symbol may retrieve word variants: (((( research professor ) or ( research prozess ))) or ((( research process ) or ( research procedures ))))*.