Motion Tracking Text question

I want to add a few text graphics to a project, that only has 1 video source.

If I analyze the video at the point where I want text to start/stop.... and add the first Match Move it lines up great; but on the 2nd and 3rd.... it doesn't seem to match the new keyframes added.

Do I need more that one video source to add additional Motion tracks? or perhaps am I doing something wrong?