Sorry—I did a search first. ????????
I am doing a title search AND a keyword search before posting stories. Pain in the neck, but unless I am posting at the same time as someone else, or the title has been changed, it’s worked so far.
Try this -- search for just one or two most important words, such as, in the case, search for "Thompson". Just that one word. Then sort by Date, most recent first. You will usually see duplicate posts, if they happened recently, near the top of the list.
If you search for the entire title, it will only hit on posts with exactly that entire same title, which will often miss minor variations in the title.