How can I best organize lots of different 'tags' to sort through

I'm moving a sheet over from Google Sheets. Right now we have a column for 'Specialties' for different medical providers and it contains keywords we need to be able to search by. I need to be able to sort through this data quickly. I don't necessarily want it as a drop down because there are over 100 different keywords/specialties. Is there some sort of tagging system or easier way to organize this?