The additional text seems superfluous. I daresay it could be confusing to a new user, who might actually be compelled to search or browse for the missing page.
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The page could confuse a new user, who is first told the question was deleted by the user, and then gets the suggestion to try searching for it.
Instead of saying, "Try searching for it," the page could say, "Try searching for similar questions." This would be compatible with the list of questions that is reported right after that phrase, and which seems a list of questions the system thinks are correlated with the question the user is trying to see.