URL structure strange search behavior

I have one userlist that I use on different site pages by using GET params.

If I have a URL assigned to a static page it must show all users with cb_country = CH and cb_s_tutor = Acting skills
but in my case it shows users with cb_s_tutor = Acting skills but with ANY COUNTRY (CH, US, FR.......)

I cannot put "Simple Exact Match" because some users can have a Multi list of cb_s_tutor params in their profile. So I use "Simple any word match" in list search configuration.
How to make this filters in GET parameters work as expected?

Ok...made some tests and saw, that it may be because of a white space in "Acting skills" in the dynamic link.
If I put "Acting+skills" or "Acting%20skills" Joomla strips + and %20.
Waiting for you to recommend something....

Ok...found a workaround:
in link param and multi select field value I put:
Acting_skills
and in multi select field label I put:
Acting skills

Works like that!
However if you know how to deal with spaces in Joomlas Menu Link, you are welcome to tell me