Perhaps you should try some spelling variations:
research white » research while, research write, research what
research where » research what, research work, research why
where players » when players, averse players, other players
white papers » white paper, state 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 where players )).
• Adding a wildcard symbol may retrieve word variants: (( research white papers ) or ( research where players ))*.