Not working: filter search, drop-down list

[andersgunnare]

Hello World,

I have searched but not found any answer that I understand, hopefully you can help me.
:-)

Please see attached image, unfortunally it is in Swedish but the function is the same without beeing language-dependent.

When I press to the right of the column "Foretag"
I got a drop-down.
I choose "Filters".
I write "Test"
(There is a company "Testforetaget").

I would like to get a hit, with the "Foretag" equal to "Testforetaget"

(Foretag is the swedish word for company).

It is doing something, the page I mean, but there is not any result given like "Testforetaget", I got the same page which I am visiting as answer.
Yes, I have tried Test* also, no success ...

As you might see from this question, I'm a beginner.

Any advice ?

Regards
Anders