Things you can do here:
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I can tell you what you need to do without looking.
A) Check for a no-follow/no-index/no-archive tag in the meta data section of the pages that are not being indexed
B) Make sure you have deep links setup to the pages you want indexed. These are links from OTHER pages that POINT to the desired pages.
C) Make sure you have in-bound, external, quality links pointing to the pages.
D) Dig around your Google Webmaster. It may have some crawl settings you can adjust.
Threes nothing more you can do. In-bound links are by far the most important in getting your pages indexed on a regular basis. Also making sure the page has quality content of value is important.