/**
 * Change any text string in Classic Commerce
 */

add_filter('gettext', 'cc_change_text_string');
add_filter('ngettext', 'cc_change_text_string');

function cc_change_text_string($changed_text) {

  $changed_text = str_ireplace('Return to shop',  'Return to product listing',  $changed_text);
  return $changed_text;

}