This is probably one of the fluctuated moment that most people may experience when they first start doing SEO. Keywords that you are focusing keep jumping around all over the place from 30th page to 10th then all the sudden it disappear. When your keywords having such kind of movement, don’t worry! This is because you are building a lot of new links to it and makes it bounces all of the place. This is a normal phenomenon and it can fix it by itself. All you have to do is just give your keywords a break for couple weeks by slowing down your link building campaign and it will finally settle. Good Luck!