> db.food.insert({name:'appletree'});
> db.food.insert({name:'monkeyfish'});
> db.food.find({$or: [{name: /apple/}, {name: /fish/}]});
{ "_id" : ObjectId("4c9603dee98d68e1d64d7b68"), "name" : "appletree" }
{ "_id" : ObjectId("4c9603dee98d68e1d64d7b69"), "name" : "monkeyfish" }