You need to find the source of the links.
This may or may not have anything to do with FLEXIcontent.
You have limited control over what links Google displays.
Google indexes links from where ever they find them.
For example I just created this working link:
www.servoflo.com/157
As soon as Google crawls this page that link will be indexed.
Ever since J1.5 added the SEF feature this has been an issue.
Joomla core SEF does no checking of the validity of the link.
It has a simple set of rules it follows, blindly.
That is how I created the link above.
So Google indexed links can come from:
- crawling other websites
- crawling other modules
- old links on your website before you made changes
- some blackhat SEO techniques make bad links in the Google index
- some website hack techniques make bad links in the Google index
- etc.
Or from crawling FLEXIcontent component links on your own website .
Google bots have also been known to follow numerical sequences and other patterns.
Finding the source of the links ...
First, look on your own web pages.
If the links appear in your own pages, find the extension creating the links, and fix it.
Often another extension is creating "bad" links (usually modules).
Second, use Google to find the website(s) with the links.
Sometimes this will work, sometimes not.
Third, look at your website logs.
See where the links are called from.
Fourth, look at Google Analytics or other traffic tracking tool.
See where the links are called from.
The only way you can remove the "bad" links from Google SERPS is to:
(1) ask them via webmaster tools, or
(2) redirect them yourself.
For example use the Redirect component to redirect the "bad" links (301) or 404 them.
Then the next time Google crawls those links they will remove them from their index.
And the redirects will keep it that way.
So unless you can find where FLEXIcontent is creating these links (and show those links on a page of your website), this is probably a usual Joomla core SEF issue.
You will find similar posts in the Joomla forums for Joomla core components and other 3rd-party components.
There are a lot of
"where are these links in Google coming from" type posts.
I did not find these links in your web pages on the few pages I looked at manually.
If you would like I can run a link scanner on the entire website to see if the links are present on any pages on the website, and hopefully identify the exact pages, and find the extensions creating the links.
That process will create substantial load on the website.