U.I. items not translated

I am working on a Danish translation for SmarterTrack, and I noticed that a few U.I. elements don't appear to use the translation file.

For example - when the ticket list is empty, there is a big faded ticket icon, the word "Tickets" (which IS translated), and then "No items were found for this view" which does not appear to use the translation file.

For Live Chats, that same text IS translated...