MaverikMaverik 27722 silver badges44 bronze badges four three This seems to Increase the precision of search engine results, but only partially. It seems to me as if prepending + to some research time period just assigns more excess weight to that time period, rather then acting to be a Boolean https://lorenzoiwivh.theblogfairy.com/31830654/5-simple-techniques-for-romantic-science-fiction-book