Global Search in MN4

How to search globally in MN4? I have lots of files in my icloud folder and would like to search them instead of just a specific studyset. We had this feature in MN3


The search function bar on the left side of the learning set can be searched globally

Kind Regards,

Support Team

i want to search all the documents (not studyset notes). how can i do that? i remember in MN3 i could search, with OCR even.
I basically want to import some books into MN4 and search through them. I could do that easily in other apps. Does MN4 do that?