Filtering searches from searches

[vamp07]

I'm trying to create a search that looks for all items that contain a string x. That works great and I can save the search. I now want to filter out from that saved search any search items so that it does not find itself or other searches. Finding searches is a problem because as I arrow my way down through search results when I hit a search I loose my found items window and I'm back into some other search and or the search I just did. I tried saying:

and - template name - does not equal - Search

but that did not work. The attribute that all searches seems to have in common seems to be "template item" but that is not a choice. I also thought of using "Default Child Template" but that is not a choice either. I'm probably approaching this problem wrong. Any pointers would be appreciated.