Have your keywords checked out: Keyword audit.
Can’t you see progress in your initial assessment of valuable keywords? That means it is probably around time for a keyword audit. An audit like this should be done periodically, every six months would be recommended. Doing so, you can really assess whether your existing campaigns are doing well for the original set of terms you optimized for. Sinzio Media is happy to look into your keywords. We can also provide other Keyword Reseach Packages: