Here is a plugin that can search for shortcodes: https://wordpress.org/plugins/wp-ultimate-search/
Alternatively, you can add the following to functions.php to include shortcodes in your search queries
<?php //Replace wp_trim_excerpt with a commented out strip_shortcodes() function improved_trim_excerpt($text) { $raw_excerpt = $text; if ( '' == $text ) { $text = get_the_content(''); //$text = strip_shortcodes( $text ); $text = apply_filters('the_content', $text); $text = str_replace(']]>', ']]>', $text); $text = strip_tags($text); $excerpt_length = apply_filters('excerpt_length', 55); $excerpt_more = apply_filters('excerpt_more', ' ' . '[...]'); $words = preg_split("/[\n\r\t ]+/", $text, $excerpt_length + 1, PREG_SPLIT_NO_EMPTY); if ( count($words) > $excerpt_length ) { array_pop($words); $text = implode(' ', $words); $text = $text . $excerpt_more; } else { $text = implode(' ', $words); } } return apply_filters('improved_trim_excerpt', $text, $raw_excerpt); } remove_filter('get_the_excerpt', 'wp_trim_excerpt'); add_filter('get_the_excerpt', 'improved_trim_excerpt'); //You might also need to add this in order to make sure the //shortcodes are actually parsed and not just displayed //$text = do_shortcode($text); ?>
This code is from http://3rdplanetwebsolutions.com/news/add-shortcode-content-to-wordpress-search-results/
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