On the View menu, select Show all Charactors,
You then see the CR & LF end of line charactors, if you highlight those charactors and then ^f they will appear in the find dialogue (as a square [] but it does do the function.
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I think the search could be better if we could make multilines search
You can (kinda)...
On the View menu, select Show all Charactors,
You then see the CR & LF end of line charactors, if you highlight those charactors and then ^f they will appear in the find dialogue (as a square [] but it does do the function.