En algunos de mis proyectos he usado el API de Facebook para realizar este tipo de bÃºsquedas, pero desde hace un tiempo, el servicio de bÃºsquedas del API ha dejado de funcionar. Si buscas mÃ¡s informaciÃ³n sobre esto en Google encontrarÃ¡s comentarios del top "Facebook discontinued Graph Search capability", "Facebook changed its search features, dropping partnership with Bing, and eliminating most of the search patterns.", "Since its launch, Graph search feature was considered as 'complicated to use' and 'faulty' by Mark Zuckerberg himself. There were many critics who even wondered it actually worked when they introduced and got viral! Mining through trillions and trillions of user information data and facebook updates would have been hard to manage eventually. So they took it down. Such a let down though for people who want to find and stalk someone new".