Hand submit your URL and gateway pages to ALL major Internet search engines. Reports Detailing Progress, Current Rankings. This is very important. Keep common word groups or phrases that people might search on together if you can. Keep your pages short while including and repeating keywords frequently, particularly in the first 3-5 lines of the pages.
Some engines ignore or largely ignore wording beyond the first paragraph or two.
Having a short page goes much farther to improve your rankings with many engines than you might think, even if the keywords are not repeated very many times. Experiment with repeating keywords up to six times and more on some engines. You should not try to go overboard repeating the same keyword or using keywords that don't apply to your site. What works for one engine may not work so well with another.