How do I finding messages with specific words in the body of a newsgroup post?

[Rhino]

I'm running Tbird 17.0.6 on Windows XP SP3.

I want to find specific text in the bodies of posts to a specific
newsgroup but I'm having trouble figuring out how to do so. For example,
let's say the newsgroup was this one, mozilla.support.thunderbird, and I
wanted to find all posts containing the word "Rastafarian" in the _BODY_
of the message. How do I go about doing that?

I've tried right-clicking on the newsgroup name, choosing Search
Messages... and then composing a search but I don't see any option to
search the Body of the message, just Subject, To, and other headers. I
tried using Customize to add "Body" and that worked but when I wrote a
filter to find a specific word that I was certain would be present,
nothing was found. I'm inclined to think I didn't create the filter
correctly but I'm not sure what I did wrong.

I've looked in Thunderbird help but have found nothing useful.

I don't want to search the entire Internet or all of Usenet. I'm trying
to search through a single specific newsgroup - I could even narrow it
down to a single thread in this case - for a specific word.

What is the proper technique to use?

--
Rhino

[Chris Ilias]

You need to download the messages for offline use. That way the message
bodies are available on your computer, where Thunderbird can perform a
search on them.
1. Go to File-->Offline-->Offline_Settings.
2. Click on [Select newsgroups for offline use]
3. Put a check mark beside the newsgroup you want to search, and click [OK].
4. Now, download the messages by going to File-->Offline-->Download/Sync
Now.

Once the messages are available for offline use, the "Body" option
should be available when going to the 'search messages' function.

--
Chris Ilias <http://ilias.ca>
Mailing list/Newsgroup moderator