Appending different parameters to the end of the Google search URL string can often extend the Google search results into something that may be more tailored for your specific search. Joost de Valk ...
URL parameters can create infinite URLs, causing crawl inefficiencies. E-commerce sites are most affected by this issue. Google is exploring solutions, including new algorithms and improved ...
Google plans to deprecate the URL Parameters tool next month, saying it's no longer needed because Google can deal with parameters automatically. Google is sunsetting the URL Parameters tool in Search ...
I spotted this post via HackerNews named Google search parameters in 2012. It is one of the most comprehensive posts explaining what all the various URL parameters in Google's search URL strings mean.
Some results have been hidden because they may be inaccessible to you
Show inaccessible results