Perhaps you should try some spelling variations:
"research problemses" » "research problems", "research problem", "research problemy"
"research progresses" » "research progression", "research programmes", "research congresses", "research programes", "research projectes", "research projectses"
"research processes" » "research process", "research procedures", "research projects"
"research progress" » "research program", "research project", "research projects"

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 problemses") OR ("research progresses"))))) OR ("research progress")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"research processes\") or (((\"research problemses\") OR (\"research progresses\"))))) or (\"research progress\"))".
• Removing quotes may allow a broader search: (((( research processes ) or ((( research problemses ) OR ( research progresses ))))) or ( research progress )).
• Adding a wildcard symbol may retrieve word variants: (((("research processes") or ((("research problemses") OR ("research progresses"))))) or ("research progress"))*.