How to find posts we've replied to

I'm just wondering if there's a way to search for or keep track of posts I've replied to. I know there's been some discussions I've added my comments to, but then I can't remember which ones they are, or I can't find them. I did a search for my name, but it had

no results." My memory just isn't good enough to remember the titles of all the posts I read or comment on.