Searching the list not working correctly

[Fred moyer]

Are others having the same problem? Searching the archives of this  
list is suddenly not functioning properly. For example, if I look for
    revGoURL
telling Google to only find occurrences over the last year, there are  
no hits. But I see that that word was used in a posting to the list  
on September 30. I often restrict my searches by date so that I only  
see recent postings.

Am I doing something wrong?
Thanks
Fred Moyer