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

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 processes) OR (research procedures)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((research professor) or (((research processes) OR (research procedures))))".
• Adding a wildcard symbol may retrieve word variants: ((research professor) or (((research processes) OR (research procedures))))*.