If you have one of these apps, YOU MUST MUST MUST mention it in the keywords section in iTunes Connect. Apple doesn't give you a lot of room (100 char. I believe), but it's important that you mention SO and SE, since without them you wouldn't have the app, so if you have room, include them, if you don't, get rid of something, whether it be your company name, or your name, or even unrelated terms that you used to possibly get more hits. If you didn't include them, just submit some bogus update citing bug fixes or something so you can change them, since you can't change them without submitting an update.