Spotlight under macOS 10.14

Spotlight has gotten to the point of not working at all. Every time I restart it works briefly and finds things. But if I wait more than a minute or two all those results disappear as well. Empty. If I restart again, again it works for one try and any results disappear after a short period of time. I've tried the rebuild the spotlight database technique, And it seems to have had no effect except to kill off any semblance of spotlight working while it's rebuilding. FYI, I am searching for text in names, not within files. In other words I'm simply trying to find files and or folders.