How to use OR operator in Gmail

I have a huge list of senders who I would like to filter in Gmail. If you can help me figure this out, I can finally get over this headache.

I've tried these queries.

from:(David Kadavy OR Lloyed from Speakeasy OR Traction Conf)

No results

from:David Kadavy OR from:Lloyed from Speakeasy OR from:Traction Conf 

No results

from:david kadavy || from:lloyed from speakeasy || from:traction conf 

Only searches for david kadavy

I've tried each search individually and they do retu many results, so it's not that there are actually no results to show.

I have read the Gmail documentation, and it doesn't help me. https://support.google.com/mail/answer/7190?hl=en