Stable Alert works from the official registration of the horse. Everything needs to be spelled and spaced exactly as it appears on the registration or you may not be able to see the horse listed. For example, if you typed A. P. Indy, you would not find him listed. This is because officially, he is registered as A.P. Indy. One space in the wrong place can make a horse not appear on the list.
For trainers and jockeys with a Jr. suffix, please type last name, Jr for best search results.