This bar may have existed before, but it was closed for some reason.

There are several possible reasons:

1. There are too many unhealthy things in it, so you can't delete them one by one. You can only close the whole one.

2. Because the country is currently reorganizing Sudi's information on the Internet, Baidu has no choice but to close some post bars and never open them again.

I think the most likely one is the second one. Now I can't even get in touch with the search of many words on Google.