To find companions, handbooks, or bibliographies related to Philosophy you can use library search; however, individual articles can be hard to find. Also try searching the portals to these resources below.
Oxford Bibliographies, annotated bibliographies that provide a gateway to research in particular subfields.
Cambridge Companions, guides to various topics.
Routledge Handbooks, book-length companions to various topics.
Oxford Handbooks, reviews of scholarly literature.