As Girish Mentioned, you can use $in operator if you want to match documents from one of the values of a particular field. ex: find all documents where a=10 or 20
If your conditions to match occur across the fields, then use $or operator. example: to find all documents where a=10 or b=20, its syntax goes like this: Model.find({ $or: [ { a: 10 }, { b: 20 } ] })