NoJoke #2Not with lichess directly.You could download all of your studies with the API using lichess.org/study/by/{username}/export.pgn and use other software to search the pgns. Note that you need to be logged in to get private studies.321111
NM PerpetualChess #3Gotcha. I like the use of "other software" - thou whose name shall not be spoken. :) - Thanks Chris!119112