Smart Search through open files/folders

I work with very large projects that have a deep directory tree. I add the parent folder as well as some child folders several levels deep to a project for easy access. However, this means that when I do a search through open files/folders, many of the files get searched 2, 3, or maybe more times. I'd like to request a feature that recognizes if a file has already been searched in a current search and skips it if it has.