Addon or script that enables Youtube's search filters on channel's videos?

I go to a youtube channel i am subscribed to and i search their videos for something. Here is an example (a game channel with a search put in): https://www.youtube.com/user/DotaCinema/search?query=a-z For some reason the search filters (sort by date, or sort by view count) are missing! Can someone please suggest an addon or a script that can make these filters properly appear when searching through channel's videos? Thank you :)