Recordset Filtering: Load on Hitting Enter

I have a search box that filters 5 queries and returns the results. If I enter my search terms and click on the submit button it works just fine. But when I hit the Enter/Return key it just adds the value to the address bar and doesn’t filter the results.

How can I get it to filter on hitting Enter/Return as well?

https://2020wlst.wlstudiotheatre.ca/membersearch
Search for: Lawryk

Thanks!