+
--
Attempts to treat fields with the same `analyzer` as a single field. It looks for each term in *any* field and calculates the best score per term. The per-term scores are added together to produce the overall score for the query. The `tie_breaker` parameter controls the calculation of the per-term scores: 

  * `0` - uses the single best score
  * `0.0 < tie_breaker < 1.0`- combines the single best score with the other scores `* tie_breaker`
  * `1.0` - adds together all scores 
--