Perhaps you should try some spelling variations:
research progresses » research processes, research programmes, research congresses
research progress » research program, research project, research projects
research prozess » research process, research propels, research processes

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 progresses ) OR ( research prozess ))) OR ( research progress )).
• Adding a wildcard symbol may retrieve word variants: (((( research progresses ) or ( research prozess ))) or ( research progress ))*.