Wordpress: Include Post Types in Search

search-post-type.php

// Define what post types to include in search
function include_in_search( $query ) {
	if ( $query->is_search ) {
		$query->set( 'post_type', array( 'post', 'page', 'feed', 'tribe_events' ));
	}
	return $query;
}
add_filter( 'the_search_query', 'include_in_search' );