Consider this collection:

```
{
  { name: 'first', toys: ['doll', 'car', 'doll'],
  { name: 'second', toys: ['doll', 'car'],
  { name: 'third', toys: ['doll', 'car', 'bricks'],
  { name: 'fourth', toys: ['doll', 'bricks'],
  { name: 'fifth', toys: []
}

```

I want to query for documents whose `toys` field is an array that only contains `doll` and `car`. In this case, both `first` and `second` should match. `first` matches because `doll` and `car` can be repeated in the array, `third` doesn't match because no other value must be present in the array, and `fourth` and `fifth` don't match because they don't contain both `doll` and `car`.

Using `$all` and `$in` doesn't work for me because they match `third`. How can I achieve this? Thanks!