This situation can occur when an order is partially received (in the case of a short shipment, for example) and the remaining items are removed from the order. There will be no items/quantities remaining to be received, yet the status will show "Partially Received."
To set the status to "Received", simply cancel the vendor order. This will not actually cancel the order (unless no items have been received), it will simply cancel the items which were not received and correct the order status.
Note: If there are products that were not deleted and not received, a message will pop up asking to transfer the those products to a new vendor order. You may choose yes or no depending on user choice.