Perhaps you should try some spelling variations:
pareto world » parent world, carlo world
karlo world » carlo world, halo world
boots three » roots three, robots three, book three
books three » book three, books tree, hooks three

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 ((karlo world) OR (pareto world)) size league ((boots three) OR (books three)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "2008 ((karlo world) or (pareto world)) size league ((boots three) OR (books three))".
• Adding a wildcard symbol may retrieve word variants: 2008 ((karlo world) or (pareto world)) size league ((boots three) OR (books three))*.