search a custom post type page

gistfile1.php

<?php

$args = array(
  'posts_per_page'    => 10,
  'post_type'         => 'your_custom_post_type',
  'post_status'       => 'publish',
  's'                 => get_search_query()
);

$query = new WP_Query($args);

if ($query->have_posts()) :
  while ($query->have_posts()) : $query->the_post();

    // loop

  endwhile;
endif;

?>