My page was successfully showing in top ranking but from last few weeks it is not showing in index also what should i do to get back my page please advise . ?
Check that your site has get any warning from Google. may be your site has DE-index by Google for any rule violation.
seems like your site is penalize.if,your site don't have bad links it would be appear back soon in few days.
Check your website content for duplicate content and Do blog commenting and Article submission for get its rank back in Google.
Hi, It could be because of spammy backlink profile. make sure you just need to make natural backlinks.
First of all, get a Google Webmasters Tools (GWT) Account for your site. If there is any problem by Google, you will be warned there beforehand. De-indexing of a site can happen in case of a penalty. We need to find what the penalty is for. It could be for spam or malware or unnatural links. For unnatural links however, you would have received a notification on GWT. Also, please do not forget to get a sitemap, if you dont already have one.