Perhaps you should try some spelling variations:
"research white papers" » "research write papers", "research what papers", "research where papers", "research white paper", "research state papers", "research late papers"
"research while papers" » "research where papers", "research which papers", "research what papers", "research while others", "research while part", "research while pair"
"research kate papers" » "research katie papers", "research gate papers", "research kati papers", "research late papers", "research state papers", "research later 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 while papers"))) OR ("research kate papers")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"research white papers\") OR (\"research while papers\"))) or (\"research kate papers\"))".
• Removing quotes may allow a broader search: (((( research white papers ) OR ( research while papers ))) or ( research kate papers )).
• Adding a wildcard symbol may retrieve word variants: (((("research white papers") OR ("research while papers"))) or ("research kate papers"))*.