Nearly two years after introducing Graph Search, Facebook has added significant smarts to its advanced search feature, letting users track down posts previously shared with them. Facebook users can now search for specific posts, including news articles, photos, and videos. It’s a long overdue feature the company’s been working on since it announced the development of Graph Search in January 2013. The update is rolling out this week for US users on iOS and desktops. There was no launch timeline announced for other platforms, including Android or Windows phone.