The reason that your site is not not appearing in search engine results page for your targeted keywords is, your site is not properly optimized for search engines for your targeted keywords. If this is the case, proper search engine optimization (seo) or optimizing you website for your targeted keywords is an utmost requirement for your website!

Neither the search engines manually assign keywords to your sites, nor you can submit a list of preferred keywords for which your sites will appear in search engines results page.

The best way to ensure that your site returns for your preferred and targeted keywords is to include them on your pages and optimize those pages strategically. Search engines crawls and analyzes the content of webpages in their index and then determine the search queries (keywords) for which they’re most relevant, and return results accordingly. If your website is information-rich, and well optimized it’ll likely return for your desired keywords. What you need is to create an optimized information-rich site that clearly and accurately describes your topic.

Keep in mind that your site may be returning for your targeted keywords but may not appear in the first few pages of search engine results. In general you can improve your rankings i.e. you can have your website appear in the first few pages of search engine results for your targeted keywords through search engine optimization (seo) coupled with effective link building activities. You can learn more about ranking technology at http://www.optimumonlinemarketing.com/how-can-you-improve-your-website-rankings-on-google-search-results.html