To search within YouTube comments on a specific video, open a comment and click on the individual comment to see all of the replies. Then just use CTRL + F
A keyword search can’t be performed in YouTube comments. However, for specific videos, the video uploader may have enabled it at their discretion.
A comment of an individual is usually indexed on the website’s content and there’s no way to see any specific keywords inside a comment unless they are put among brackets in front of another pair of brackets. Therefore, it is necessary to do a keyword search if you want to find out what kind of comments people left or you want to know your competitors’ reaction on your business/service/product.
A keyword search in YouTube comments does not exist.
This is because, by default, YouTube’s Recent Comments page displays only the 100 most recent comments posted to a particular video. You can change this view to show all of the most recent comments at any time by clicking on “Show All Comments.”
If the comments are public and you want to find a word that has appeared in that comment, it’s pretty easy. You just use “Control F” to search for it. Otherwise, using youtube comments isn’t really possible.
It is however possible to do an Advanced Search on Google and filter out the results from YouTube with the following query: site:youtube.com “this is great keyword analysis tool”
To search for a word on YouTube you can use the following syntax. All words must be in quotation marks, spaces will break it down into separate words, and if there are too many results delete the word “and” and replace it with “or”.
“car make model year”
This would return all videos that have those three words in them. It would also include other keywords, so it’s best to keep it concise.