[sniperhiga]

You have dynamic website with many pages? Often it happened that Google can't crawl all your pages because they are too far from homepage.
To increase amount of pages indexed by Google you should:

1. Build deep links from other sites.
2. Build deep links from social networks.
3. Internal linking will help spiders to discover more pages.
4. Avoid duplicate content.
5. If you have search box on your site you can create popular search page or tag cloud with links to the most popular search phrases.
6. Sitemap.
7. More unique content on the pages.
8. Avoid url canonization

Good luck!