just a thought regarding your "Why does google don't see all my pages which were indexed in the sitemap."
Below is quote from Google site maps page (or here's more info from google support [external links are visible to admins only].) I would say that you should give them more time. Or try to add in the pages more content or improve some SEO stuff like adding unique description and title for each page (should not be same these two, often in forums a page has title/description the same wording.) It in in webmasters tools Q and A section.
"The stats on the Sitemap Details page are a close approximation of the status of your URLs. We don't guarantee that our system will index all the URLs in a Sitemap, and it's normal for some pages not to be indexed. In addition, we don't index images directly (instead, we index the page that contains the image). As a result, direct image URLs in your Sitemap won't be indexed."