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Submitting is not very important with Google, as it places a very high value on links pointing to your pages. If there are few or no links pointing to your page Google may well ignore it, even if you submit it. Conversely, if there are many links to your page Google will index it, even if you do not submit it.
<Added>To answer your specific question, you can subit any page you want.
But you seem to be confusing submission (getting a page in the index) with searching (finding a page that is in the index). Keywords play no role in the submission process, they are very important in the searching process.</Added>