17. The system of claim 15 , the operations further comprising: receiving the first search query from a user device; and providing the combined search results to the user device for presentation in a user interface.
17. The system of claim 15 , the operations further comprising: receiving the first search query from a user device; and providing the combined search results to the user device for presentation in a user interface. 18. The system of claim 17 , wherein the combined search results are provided in place of search results obtained for the first search query.