400. That’s an error.

Google cannot redirect you to http://dogbert.abebooks.com/servlet/SearchResults?tn=R%C3%A9pertoire+m%C3%A9thodique+et+alphab%C3%A9tique+l%C3%A9gislation,+doctrine+et+jurisprudence+mati%C3%A8re+droit+civil,+commercial,+criminel,+administratif,+droit+des+gens+et+droit+public because the request was invalid.

This might be because the link was created a long time ago. Try your search again on Google. That’s all we know.