Perhaps you should try some spelling variations:
"research written paper" » "research write paper", "research within paper", "research writing paper", "research written after"
"research white paper" » "research while paper", "research write paper", "research what paper"
"research where papers" » "research what papers", "research work papers", "research why papers", "research where players", "research white papers", "research theme papers"
"research site paper" » "research sites paper", "research scope paper", "research say paper", "research size paper", "research state paper", "research fine paper"

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