How to fix Main URL(not show) in search engine results?

[richardmsmith]

There are a couple of things you need to do to fix this:
1. Decide which URL style you want to use, www or non-www.
2. Set up a 301 redirect so that any links to your non-preferred URL style will go to the right
3. style. This way you don’t waste link value by splitting it between two URLs.
4. Set your preferred domain in Google Webmaster Tools so your search result listings are consistent with your style preference.
5. Make sure whenever you build links to your site that you use the preferred URL style.