[racket] Is there a way to search across archives on a subject?

For example,
I imagine that there were questions and answers about getting Racket to
access PLT Scheme collections.
I'd like to look for these on users at racket-lang.org archives but this seems
to be very tedious... select a dated archive, then seach for the subject,
select another dated archive, then search for the subject.

Any way to search across all the archives in one go?
Thanks.
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