How do I get a keyword tag to only show the pictures asigned to it instead of having pictures that have no tags or one that isnt in the one I'm looking?
Here's a guess ... your thumbnail cache is corrupted.
You fix this by selecting all photos, then Edit->Update THumbnails and then be patient as this may take a while. Probably best to get this started before you go to bed and let it run overnight.
Retrieving data ...