Hey all,
I think I found a solution (at least it works for me). You cannot search markers in the main search dialogue (that I know of), however, you can search it in your timeline’s index.
You can have a series of markers and when you pop open the index tab on the bottom left, you can search there in the “tags” section. When you click on one, it takes you right to that place in the timeline.
For me this allows me to make the notes I need for a long interview clip and find it fast. You just need to know which timeline or clip you want to search. Heck, you could put all your B-roll in a single timeline and use it as a way to index footage, too. Hope that helps!
Daniel