Useful if there’s a commonly used abbreviation on the website e.g. UT, that wouldn’t otherwise be returned in SearchWP results (default word length is three).

<?php

/**
 * Reduce SearchWP's minimum character length to 2 (default is 3).
 *
 * @url https://searchwp.com/documentation/hooks/searchwp-tokens-minimum_length/
 */
add_filter( 'searchwp\tokens\minimum_length', function ( $min ) {
	return 2;
} );