Perhaps you should try some spelling variations:
las world » das world, gas world, oas world
papers 26 » papers 6, papers 20, papers 21
2008 las » 2008 a, 2008 a2, 2008 a1
papers 2 » papers _, papers a, papers 1

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: (( 2008 las world ((papers 26) OR (papers 2)) judge _ ) OR ( 2008 _ world ((papers 26) OR (papers 2)) judge a )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( 2008 las world ((papers 26) OR (papers 2)) judge _ ) or ( 2008 _ world ((papers 26) OR (papers 2)) judge a ))".
• Adding a wildcard symbol may retrieve word variants: (( 2008 las world ((papers 26) OR (papers 2)) judge _ ) or ( 2008 _ world ((papers 26) OR (papers 2)) judge a ))*.