Customize the query submitted to SearchWP before the search actually takes place

gistfile1.php

<?php

// if your visitors commonly misspell "soccer" as "socer" you can fix that for them
function my_parse_searchwp_terms( $query, $engine ) {
  if( false !== strpos( strtolower( $query ), 'socer' ) ) {
    $query = str_replace( 'socer', 'soccer', strtolower( $query ) );
  }
  return $query;
}
 
add_filter( 'searchwp_terms', 'my_parse_searchwp_terms', 10, 2 );