Overlay or separate search results in a single chart?

Is it possible to overlay or separate search results in a single chart?

I'm working in Greek, but I'll use as simple English example.

Let's say I want to find all the references to light or dark in John.

That's an easy Bible search, but what I want to chart is when "light" appears in John as compared to when "dark" appears. But when I go to chart it, I can only get single bars for the combined results. (I would most like a column or line graph using frequency and showing zero value.)

Is there a way to "overlay" two search graphs? Or is there a way to graph the results of an OR search separately?

Thanks! Mark