In Google Analytics, how to set view filters for tracking subdirectories?

Question

How to set view filters for tracking subdirectories like:

http://www.example.com/en/us/?sc_lang=en

http://www.example.com/en/us/?sc_lang=de-EU

http://www.example.com/en/us/?sc_lang=fr-EU

I'm thinking of the filter as:

Predefined --> Include only --> traffic to the subdirectories --> that contain

/?sc_lang=de-EU 

and then the same thing with a new view with another subdirectory filter as:

Predefined --> Include only --> traffic to the subdirectories --> that contain

/?sc_lang=fr-EU

Is this the right method or there is any other way?