Views: Multiple AND/OR operators in contextual filters
So I think you should remove your contextual filters and instead add exposed filters. In there you can make your industry filter multi select so the user can pick more than 1. Then you can also choose to make the filters an either AND or OR giving you that flexibility too.

If the exposed filters or the better exposed filters don't look as you wanted you could even hide the views filter form and created your own custom form that replicates it by passing the parameters into the url that views requires

Hope that helps!