Dont know how well this will work, but its a voice recognition search facility for youtube channels like ClarionLive
VideoMentions Voice Recognition Search
https://www.youtube.com/user/ClarionLive
Type in the keywordS you are looking for and it shows the list of youtube clips the word is mentioned in from the channel.
Somewhat related, this search’s for words in the Youtube subtitles, but I dont think ClarionLive uses them, but it is intended for people looking for words to better pronounce their English.
(youglish.com)