Truthlikeness

So, I've been working the last few weeks on the Master's thesis to finish up my theology degree at the Southwestern Baptist Theological Seminary. The topic is truthlikeness. I'm examining various philosopher's attempts to articulate what it takes for one theory to be 'closer to the truth' than another theory. Also: supposing we don't already know what the truth is, how can we know we're getting closer to it?

One motivation for all this is to make sense of scientific progress: in what sense are scientific theories getting 'better', if all our past theories are false and our current theories are most likely false as well? And, can we know that our theories are, in fact, getting better?

I'm about halfway done (though the last half is probably going to be much harder than the first). I don't think anything is ready to be shown, but here is a bibliography which I've compiled for the topic.