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