Please backup template and go to your theme code

And change <iframe allowfullscreen='' class='videoif' expr:src='data:blog.searchQuery' frameborder='0' height='500' mozallowfullscreen='' webkitallowfullscreen='' width='100%'/>
With
<iframe allowfullscreen='' class='videoif' expr:src='data:blog.searchQuery + "&parent=match-live-arabic-v3.blogspot.com"' frameborder='0' height='500' mozallowfullscreen='' webkitallowfullscreen='' width='100%'/>