Perhaps you should try some spelling variations:
"research processes" » "research procedures", "research projects", "research progress", "research progresses", "research projectses", "research projectes"
"research problems" » "research progress", "research project", "research program"
"research process" » "research progress", "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 processes") OR ((("research process") OR ("research problems"))))*.
• Removing quotes may allow a broader search: (( research processes ) or ((( research process ) or ( research problems ))))*.