Suppose you are seeing a non relevant website link in the “clicks” section of wordpress site stats and you want to find out your post in which the link is present (to remove the link), then here are the steps to follow.
Google site search does not help in this case. Because, links to the websites are in the html language.
So, go to posts tab in your wordpress admin page, “click all posts”
Once you are in your posts list, on the right top corner, you have got “search posts”.
There, you enter your missing link url and hit search.
It will show the list of all posts that contain your missing link . Go to each post and edit the posts.