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This is a fairly straight-forward question/request that I couldn't find a direct, specifically on point answer to with the search, though it seems like there would be one by now.
I've seen the meta questions around deleted answers, and not displaying deleted posts in a user's profile for non-moderators out of concern that people would use it to shame or abuse other users, but nothing that seems to definitevly answer wanting to search deleted questions.
How can I, as a mere user (or 10k+/20k+ user), with no blue diamond, include deleted questions in a search result? And could such functionality be added into the Stack Exchange search? If not, is there another way for me to achieve what I want?
I recently noticed, through my flagging history, that before the new locking feature ("locked for historical significance"), I'd successfully flagged a thread for deletion, that with this new feature, should probably be undeleted and locked for historical significance, as it is a question with a high number of page views and good information on the problem being asked about. I have since flagged it for moderator attention, but I'm quite sure there are good number of other threads like this, with high page views and good information, whose deletion status probably ought to be reviewed in light of the changes to the lock feature, and I would like to find them and flag them for review.
So, is there any way for me, as a non-moderator, to search for questions like this, that with the changes to the lock feature, ought to be brought to a moderator's attention for possible undeletion and locking?