Customize the SearchWP Regex Whitelist

gistfile1.php

<?php

function my_searchwp_term_pattern_whitelist( $whitelist ) {
	$my_whitelist = array(
			"/\\b(IT)\\b/u", // always keep "IT" (all caps only!)
		);

	// we want our pattern to be considered the most specific 
	// so that false positive matches do not interfere
	$whitelist = array_merge( $my_whitelist, $whitelist );

	return $whitelist;
}

add_filter( 'searchwp_term_pattern_whitelist', 'my_searchwp_term_pattern_whitelist' );