This has been practiced numerous times (and this is what is in your school adminstrator's mind, well, your department chair's mind): the advertisement can (and will) be very specific, such as having taught these courses (the ones you have tought) at such type of school (the type of school that your school belongs) for at least 3 years (the length you served), and have served in blah, blah. And in the end, in the whole world, you will be the only one that qualifies, LOL.