Perhaps you should try some spelling variations:
running championships » winning championships, trotting championships, win championships
instance multi » enhance multi
dance multi » uence multi, distance multi, enhance multi
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 ((instance multi) OR (dance multi)) running championships.
• Adding a wildcard symbol may retrieve word variants: world song ((instance multi) or (dance multi)) running championships*.