When I attempt to use someone else's custom search by its url, I get taken instead to my own custom search admin page.
How do I use someone else's custom search url?
For example, customsearchengine.com has an entry for the OpenDOAR search.
It gives the url as: http://www.google.com/coop/cse?cx=016766439200934687091:ln-icm1qyko
When I put this in, I get redirected to https://cse.google.com/cse/all
Perhaps that custom search doesn't exist anymore. Bu the same happens when I try to look up other custom searches.
http://www.customsearchengine.com/ is super old, and not affiliated with google.
Custom Search's URL format has changed since 2008, so instead of
http://www.google.com/coop/cse?cx=016766439200934687091:ln-icm1qyko
you can use
http://www.google.com/cse?cx=016766439200934687091:ln-icm1qyko
but that CSE doesn't exist any longer, so 404 error