Lightroom: How to select images from a list of file names?

I'm trying to select a list of photographs... I have a list of file names separated by commas and I can't find the "library filter" options that are described online (maybe from previous versions of LR?)

I can search for a single filename and it will pull it up, but I need to find 185 selections and the program says "black hole." Does anyone know how I can do this? Thank you!

Update: it appears to max out at 2 images when searching multiple