Google Search is testing custom filters and pre-define search filter templates. It appears you can save your custom filters and reuse those filters for future searches. This is showing up for a limited number of searchers.This was reported by Ben Schoon on 9to5Google who shared a number of screenshots. Ben wrote, "The filters can add specific keywords or filter using specific websites to help you better find what you’re looking for. You can also set a filter to search for specific file types... Read this story
