11. The system of claim 10 , the operations further comprising: receiving the first search query from the client; determining that the first search query is a search query for which real-time search results should be returned; and sending to the client a user interface document that contains the client software as a response to the first search query.
11. The system of claim 10 , the operations further comprising: receiving the first search query from the client; determining that the first search query is a search query for which real-time search results should be returned; and sending to the client a user interface document that contains the client software as a response to the first search query. 13. The system of claim 11 , wherein determining that the first search query is a search query for which real-time search results should be returned comprises: receiving data for the first search query; generating one or more scores from the data; and determining that each of the one or more scores satisfies a respective threshold.