Is there a more comprehensive/reliable way to search through these mamil archives?

I have been using google to search the archives, but have noticed the results are not complete.

E.g. if I wanted to find my old posts, I would enter a search term like this into google:

muggeridge site:https://lists.ozlabs.org/pipermail/openbmc/

Though, that returns no results (and similarly for other search terms for which I know there are matching archives).

Thanks,

Matt.