Let's say for a system, there are several stories that would be repeating all throughout but in different contexts.
"As a [insert role], I want to search through a data list so that I can easily find what I am looking for."
Same with logging in, filtering, editing profile, etc. All of these are stories that each role would need to perform to complete a certain epic (or are epics in themselves).
I am not sure if I should repeat all these stories for every role (and tag them as "Log-in Theme" or "Search Theme") or do I create ONE separate "Search Epic" which I would refer to whenever I'd need to (which of course, contains user stories for searching).