RussiaCristiana on "[Plugin: WP-Print] Not displaying in search result page"

Theme: ShootingStar
I added the string:
<?php if(function_exists('wp_print')) { print_link(); } ?>
in search.php page as suggested in installation tab, but when I get my results, no print icon appears on the result page.
Thx

https://wordpress.org/plugins/wp-print/