The first question for this is, have you done your part in reaching the top rank? I mean to say, have you performed well in SEO for your site? To achieve better chances of ranking your website in the marketplace, best practices are listed to achieve GOOD SEO for your website. Check here if you ever missed one of these, To achieve better chances of ranking your website in the marketplace, best practices are listed to achieve GOOD SEO for your website.

Indexing Keywords Build Your Traffic Optimization (On-Page) Perform Backlinking SEO Friendly Writing for Your Good Content Review your Analytics to know how you perform well in the Search Engine Site Architecture

One thing is for sure that will help you with these, is to hire an SEO Specialist to advise you on the possible solution and techniques that are SEO friendly.