Perhaps you should try some spelling variations:
"research white papers" » "research write papers", "research where papers", "research site papers", "research state papers", "research late papers"
"research white paper" » "research write paper", "research where paper", "research site paper"
"research while papers" » "research where papers", "research which papers", "research why papers", "research while others", "research while part", "research while pair"
"research what papers" » "research what hampers", "research what players", "research what pages"

Try widening your search to All Fields.

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