Google Shopping does not directly handle orders through Google Express, as Google Express has been integrated into the larger Google Shopping platform. However, if a user wishes to cancel an order, it generally depends on the specific store policies from which the order was placed. Most retailers provide options for canceling an order within a certain timeframe after the order is placed. Users should check their order confirmation email for details or their account on Google Shopping for specific cancellation instructions. It is advisable to act quickly, as the window for cancellation may close once the order is processed for shipping. For any specific guidelines, users can refer to the current web page for relevant information or assistance related to their order.