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Use the site:domain.com -inurl:www and the site:www.domain.com searches in Google to list your pages. Make sure that all your titles and descriptions (snippets) are different.
Check and see if a lot of pages are hidden behind a In order to show you the most relevant results, we have omitted some entries very similar to the 818 already displayed. If you like, you can repeat the search with the omitted results included. link at the end of the SERPs.