Facebook Graph Search can now help find posts you've forgotten

Facebook hinted that Graph Search would arrive on mobile almost a full year ago, in January 2014, and now it finally has - at least on iOS.The feature is also gaining some new functionality: the ability to search for specific posts.Facebook Graph Search is a relatively complex tool for searching Facebook that was introduced in 2013. It lets users enter specific search terms like "my friends who live in San Francisco" or "photos of my family."Until this update, however, Facebo