Perhaps you should try some spelling variations:
running championships » winning championships, trotting championships, win championships
distance mountain » distant mountains, distance multi, distance main
mountain running » mountain using, mountain mining, mountain rudnik
world song » world some, world so, world soul

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: ((world song) OR (world among)) distance mountain running championships.
• Adding a wildcard symbol may retrieve word variants: ((world song) or (world among)) distance mountain running championships*.