Perhaps you should try some spelling variations:
"research professor" » "research profession", "research process", "research prozess"
"research processes" » "research process", "research procedures", "research practices"
"research progress" » "research program", "research project"
"research projects" » "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 progress"))) OR ("research projects")).
• Removing quotes may allow a broader search: (((((( research professor ) or ( research processes ))) or ( research progress ))) or ( research projects )).
• Adding a wildcard symbol may retrieve word variants: (((((("research professor") or ("research processes"))) or ("research progress"))) or ("research projects"))*.