with the SEARCH BLOG feature on this blog. It doesn't recognize posts older than, say, a year and a half old.
I was looking for an old post of mine, using a word that I know appeared in the post, and it didn't show.
However, if one goes to Edit Posts, and then searches posts that way, everything is fine.
I'd complain to Blogger if I knew how, and if I thought it would do any good.