My attempt at *natural* search engine placement

As you probably know, AME Labs is the inventor of SpeedMath, a fantastic software program that helps children memorize math facts. The people who have it absolutely love it and it is doing fairly well with just pay-per-click advertising and word-of-mouth. However, if you search for any of the following math-related keywords, you won't generally find SpeedMath anywhere near the top search results.

If I could get SpeedMath at the top page of search engines for... math, math tutoring, math worksheets, math game, math problem, math help, math game for kid, math tutor, online math game, math puzzle, math for kid, kindergarten math, math quiz, math homework help, math test, free math help, math lesson, kindergarten math game, free online math game, everyday math, basic math, 5th grade math, free math game, math teacher, math activity, math practice, math fun, math fact, 6th grade math, math web site, math trick, free math test, 7th grade math, 2nd grade math, math software, 4th grade math, math curriculum, math homework, math worksheet, elementary math, middle school math, 3rd grade math, math question, cool math, 8th grade math, free math, online math, fun math game, first grade math, free online math game for kid, 6th grade math worksheets, internet math game, cool math 4 kid, preschool math, and second grade math, then I would be extremely happy and probably increase my sales dramatically. Anyway, here's hoping!