Search Videos within a YouTube Channel
YouTube search is extremely powerful and efficient. There's however one important search function that's missing in the YouTube apps for Android & iPhone as well as YouTube's mobile website.
You cannot search for videos within a specific channel. For instance, if you would like to see all videos that were uploaded by MKBHD related to Tesla, you just can't do that on your mobile phone.
There's where this mini YouTube search engine can help. Sign-in with your YouTube account, enter a search query, select any subscribed channel from the drop-down and it will show a list of all matching videos within the selected channel.