Most search in modern projects isn’t things like date ranges though it’s often things like machine learnt mappings that identify similarity scores with words. F

Most search in modern projects isn’t things like date ranges though it’s often things like machine learnt mappings that identify similarity scores with words. Failing that it’s some sort of ML to learn tags and keyword matching on those tags. When I search YouTube I’m seldom looking for all videos made on August 29th. I might instead be looking for videos of a black cat. Or videos containing music with certain lyrics that I search for. This is what I thought you meant by rich search. I contend it’s unlikely you can design a privacy respecting service that can also extract the features necessary to train a search model.