I have a website using Joomla, and I've set the home meta description. However strangely for some keyword search, my site was still displayed in Google with default Joomla description "Joomla! - the dynamic portal engine and content management system." But with some other keyword, my site is already displayed with proper description. It seems to me that Google is indexing my sites with 2 versions?? But both are exactly the same URL (www.mysite.com). And I've set the Canonical URL properly. The site is still 3 months old. Any advise for this situation? Thanks in advance.