Perhaps you should try some spelling variations:
research professor » research profession, research process, research prozess
research processes » research process, research procedures, research projects
research propels » research process, research prozess, research prospects

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 propels ))) OR ( research processes )).
• Adding a wildcard symbol may retrieve word variants: (((( research professor ) or ( research propels ))) or ( research processes ))*.