Buscar un producto o algo en wordpress

$args = array(
  'post_type' => 'shop_order',
 'posts_per_page' => '-1',
		'post_status'=>'wc-processing',
		"meta_query" => array(
			
			
'relation' => 'OR',			
        array(
            "key" => "delivery_date",
            "value" => $fecha,
            "compare" => "LIKE"
        ),
		 array(
            "key" => "pickup_date",
            "value" => $fecha,
            "compare" => "LIKE"
        ),	
		
		
		
		)				
);  



$my_query = new WP_Query($args);

$orders = $my_query->posts;
    foreach($orders as $order){