This extension will show products sku names in order list. You can filter orders by sku names on products. For example , if you enter 'SKU' in search field it will give you all orders in which you have product with sku 'SKU' . Also will give you products with sku's that contain 'SKU' . For example 'sku-4' or 'e-sku' or 'e-sku0'. It is good that you can find all orders that have one product by entering sku name.