Perhaps you should try some spelling variations:
"research white papers" » "research while papers", "research write papers", "research what papers", "research white paper", "research late papers"
"research state papers" » "research status papers", "research strategy papers", "research station papers", "research staff papers"

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 white papers") OR ("research state papers")).
• Removing quotes may allow a broader search: (( research white papers ) or ( research state papers )).
• Adding a wildcard symbol may retrieve word variants: (("research white papers") or ("research state papers"))*.