Can anybody tell me why the search engine which comes with the prestigious Yahoo Mailbox just doesn't work? I gave up on using this lousy search engine for a very long time. Then today, I tried once more and searched again. It still refuses to do its job. It keeps saying that there are no such words in my mailbox. I sent an email to Yahoo some four years ago but I never got an answer.

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But I know perfectly well that all the emails I sent to myself are in the box till this very day, waiting patiently for me.  Is there any experts out there?

Thank you for your attention.