Woocommerce: Add column to ORDERS admin page with items purchased

I have already manage to create a column thanks to this:

    // ADDING COLUMN TITLES
add_filter( 'manage_edit-shop_order_columns', 'custom_shop_order_column',11);
function custom_shop_order_column($columns)
{
   //add columns
    $columns['my-column1'] = __( 'Column Title','theme_slug');
   return $columns;
}

// adding the data for each orders by column (example)
add_action( 'manage_shop_order_posts_custom_column' , 'custom_orders_list_column_content', 10, 2 );
function custom_orders_list_column_content( $column )
{
    global $post, $woocommerce, $the_order;
    $order_id = $the_order->id;

    switch ( $column )
    {
        case 'my-column1' :
            $myVarOne = wc_get_order_item_meta( $order_id, '_the_meta_key1', true );
            echo $myVarOne;
            break;
    }

But I don’t know how to add the data to this columns. I need to add the items purchased by the customers. Is it possible?

Thanks!