This is a conceptual map of some of the key ideas connected to the topic of paranormal.
Add specific limiters
Ask questions about the topic: Who, What, When, Where, Why?
Here are some broad sample searches in Primo to get your research started:
Parapsychology AND investigation
Parapsychology OR paranormal
(Parapsychology OR paranormal) AND faith
(Parapsychology OR paranormal) AND ghosts
Add additional key words to your search to narrow your focus.