In Mendix 9, page URLs have a single ID in them relating to a specific object, so you can only have a single parameter.
In Mendix 9.24 your best option is to use the Deeplink module in the Marketplace, as you can customise the format of the URL. However, this is deprecated in Mendix 10.
If you can upgrade to Mendix 10, page and microflow URLs are far more flexible, and sound like what you need.
https://docs.mendix.com/refguide10/page-properties/#url