|MadSci Network: Computer Science|
Unfortunately as far as I know you cannot exclude items from the search result explicitly. The only way is to find a criteria that is met by what you want to see in the search result and is not metby what you want to exclude from the results. Also in windows you cannot use every file attribute as a search criteria (such as hidden, read-only, directory, system).
Try the links in the MadSci Library for more information on Computer Science.