Everybody used to find our website 2 or 3 no. pages in Google search for "Online Shopping in India". Google PageRank is 3. But since we have changed our server and updated our website (Some sub domains do not exist any more), I have found that our website is now gone below to 10 or 11 no. pages in Google search for "Online Shopping in India".
How do we improve our Google search? Please suggest.