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

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