You still don't get the idea, I 'll make it simple. Look الأطفال مهمتنا and you will find everything but not a single article or even a tweet about this documentary in Arabic.And this the name of the documentary! so why should we translate it?What is common is that titles of movies and documentaries should not be translated randomly, in order not to mislead the reader.
I took a look at that glossary, it is far away from being official, and this the link toi it:
http://www.google.co.ma/url?sa=t&rct=j&q="glossary of unicef...