Can't find language String

Hello Everyone,

after Mark's tip to check admin language files as well as site language file I was able to translate most of the language strings for the new page functionality in EasySocial.

Though I wasn't able to find language string for discussions title in page:

http://prntscr.com/d3wzfa

It is the same for the events, feeds, files and followers.
I could only change title for polls and announcements.

These are the language strings I translated:

http://prntscr.com/d3wwkg

Can you help me?

Best regards,

Alp