Perhaps you should try some spelling variations:
"research professor" » "research profession", "research prozess", "search processor"
"research processes" » "research procedures", "research projects", "research practices", "research projectses", "research problemses", "research projectes"
"research progress" » "research project", "research projects"
"research process" » "research projects", "research problems", "research project"
"research program" » "research project"

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 process") OR ("research progress"))) OR ("research program"))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"research professor\") OR (\"research processes\"))) or (((((\"research process\") or (\"research progress\"))) or (\"research program\"))))*".
• Removing quotes may allow a broader search: (((( research professor ) OR ( research processes ))) or ((((( research process ) or ( research progress ))) or ( research program ))))*.