Perhaps you should try some spelling variations:
research while » research where, research which, research what
white papers » white paper, state papers
write paper » white paper, written paper, waste paper
while paper » white paper, while pair, while chapter

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 ((write paper) OR (white papers)) ) OR ( research while paper )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( research ((write paper) OR (white papers)) ) or ( research while paper ))".
• Adding a wildcard symbol may retrieve word variants: (( research ((write paper) OR (white papers)) ) or ( research while paper ))*.