[{"user":"bob","hobbies":["jogging"]},{"user":"bill","hobbies":["reading","drawing"]},{"user":"thomas","hobbies":["reading","cooking"]},{"user":"susan","hobbies":["coding","piano"]},{"user":"susan","hobbies":["coding","reading"]}]

db.collection.aggregate([{$match:{hobbies:{$in:["reading","coding"]}}}])