Multiple values on single keyword query (URI)


I've been trying to find out how I can search for multiple values on the same parameter. Must be a URI request!



The problem is that only one of the parameters is prioritized (or show nothing at all), and I can't search for multiple values. Anyone know how to search one keyword with multiple values?

Seems like it works with the 3rd url.

=> _search?q=%2Buser:adam,eve