Conditionally force OR logic in SearchWP based on search query

functions.php

<?php

// If someone searches for "soccer ball" force OR logic in SearchWP.
add_filter( 'searchwp_terms', function( $query, $engine ) {
  if ( false !== strpos( strtolower( $query ), 'soccer ball' ) ) {
    add_filter( 'searchwp_and_logic', '__return_false' );
  }
  
  return $query;
}, 10, 2 );