Ran across this when responding to a previous post…
It does have a topic though:
@KelvinC ?
https://docs.mcneel.com.s3.us-west-2.amazonaws.com/rhino/7/help/en-us/index.htm
Is it a problem if you search for “turntable” on this source copy of Rhino Help website?
If it works, the problem is temporary because I uploaded new help files a few hours ago. It may take a while to distribute/cache the new search index data to the server close to your location.