Database

[{team:"England",goalsFor:3,goalsAgainst:5},{team:"Chile",goalsFor:3,goalsAgainst:5},{team:"Mexico",goalsFor:4,goalsAgainst:5},{team:"Italy",goalsFor:4,goalsAgainst:5},{team:"Brazil",goalsFor:1,goalsAgainst:15},{team:"Argentina",goalsFor:41,goalsAgainst:15}]

Query

db.collection.aggregate([{$group:{_id:{goalsFor:"$goalsFor",goalsAgainst:"$goalsAgainst"},teams:{$push:"$team"}}},{$match:{$expr:{$gte:[{"$size":"$teams"},2]}}}])

Result