Perhaps you should try some spelling variations:
"research second paper" » "research section paper", "research scope paper", "research selected paper", "research second pair", "research second part", "research second phase"
"research white papers" » "research while papers", "research write papers", "research where papers", "research white paper", "research state papers", "research late papers"
"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 second paper") OR ((("research white papers") OR ("research what papers")))).
• Removing quotes may allow a broader search: (( research second paper ) or ((( research white papers ) or ( research what papers )))).
• Adding a wildcard symbol may retrieve word variants: (("research second paper") or ((("research white papers") or ("research what papers"))))*.