Ember data - return two resources in one requests

I want to implement search for e-shop. User enters text, and API returns products AND categories which matches search phrase.

How do I get products and categories in one request ?

I'm aware I could do

return Ember.RSVP.hash( {
    products: this.store.find("product", {searchTerm: "banana"})
    categories: this.store.find("category", {searchTerm: "banana"})
} );

but isn't there a way to do it in a single request in order to have a better performance ?