Perhaps you should try some spelling variations:
research while » research where, research which, research why
while papers » white papers, while others, while part
what papers » what hampers, what players, what pages
site paper » white paper, state paper, fine paper
size paper » prize paper, fine paper, size panel

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