I am not a Google expert, never used their analytics or anything. I am about to start writing my series on self publishing and when I get to marketing I will cover more of what I know regarding Google search.

The best tip I can give you right now without writing up a full post (which will be coming in the next month) is to experiment with what you would type into Google search. It isn't a guarantee you will get first page, but at least it will be something natural people would search for. Looking over your posts none of them I glanced at would ever be something someone would be likely to type into the search.