[{"_id":ObjectId("5a934e000102030405000000"),"org_id":10,"person_id":2},{"_id":ObjectId("5a934e000102030405000001"),"org_id":7,"person_id":6},{"_id":ObjectId("5a934e000102030405000002"),"org_id":9,"person_id":10},{"_id":ObjectId("5a934e000102030405000003"),"org_id":9,"person_id":10},{"_id":ObjectId("5a934e000102030405000004"),"org_id":2,"person_id":1},{"_id":ObjectId("5a934e000102030405000005"),"org_id":9,"person_id":3},{"_id":ObjectId("5a934e000102030405000006"),"org_id":8,"person_id":9},{"_id":ObjectId("5a934e000102030405000007"),"org_id":2,"person_id":2},{"_id":ObjectId("5a934e000102030405000008"),"org_id":3,"person_id":2},{"_id":ObjectId("5a934e000102030405000009"),"org_id":5,"person_id":7}]

db.collection.find({person_id:{$in:[2,6,10]},org_id:{$in:[7,9,10]}})