Ah - yeah, when you create a forum, the forum keyword should be just one word. I think I reported a bug where it allowed you to enter multiple keywords.
You could fix it with a series of MySQL queries. Backup your database first.
First take a look at your w3t_Boards table. You can view all the keywords with this query:
SELECT * FROM w3t_Boards
First we need to fix the boards table
UPDATE w3t_Boards
SET Bo_Keyword = 'newword'
WHERE Bo_Keyword = 'wrong words'
Fix the announcements table
UPDATE w3t_Announcements
SET A_Board = 'newword'
WHERE A_Board = 'wrong words'
Update the post tracking table.
UPDATE w3t_Last
SET L_Board = 'newword'
WHERE L_Board = 'wrong words'
Fix the moderators
UPDATE w3t_Moderators
SET Mod_Board = 'newword'
WHERE Mod_Board = 'wrong words'
Fix the posts
UPDATE w3t_Posts
SET B_Board = 'newword'
WHERE B_Board = 'wrong words'
I *think* that's all you need to do to change keywords. Where I have newword make it the unique keyword (one word no special characters or spaces) for the forum, where I have 'wrong words' put the old multiple keywords you had there.
Hope that helps.