Too Much Variance Result for Google Index

Selected answers from the Dumb SEO Questions Facebook & G+ community.

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  Jagu Mepani: Too Much Variance Result for Google Index
  
  My site is ;http://www.vitalconcept.co.uk/.
  
  I found too much variance result for Google index as below.
  
  1. Google Search Result = 89
  2. Google Search Console – Index Status = 175
  3. Google Search Console – Sitemaps = 151
  
  I've never been able to get it to index all 151 of my pages in Google Search Result. I'm not sure why it won't index my urls even after I submit them and fetch and render them. I have no manual actions against my site and there's no record of removed urls. Any advice?
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  Neeraj Pandey: One more imp thing that u missed is duplicate content. All above may be different . google search showing all the pages that it has in index, index status includes your duplicate pages too so it will be quite often more in numbers and XML sitemap is the URLs that you ask google to crawl and index so you need to focus on XML sitemap submitted and index . only 1 would be out of 100 who can say it has all the pages indexed from XML but yeah 90% is figure that should be targeted. For index pls check URL parameters not creating duplicate issue remove duplicate pages and check server robots file meta tags no index
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  Marty Eigner: The site command is very bad. If you want more accurate results after you have used the site command go up to the address bar and append &start=990&filter=0 to the end of the URL.
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  Jagu Mepani:
  +Neeraj Pandey ; I will cross check whole site and no duplicate contents or pages available. ;