14. One or more computer storage media storing computer-readable instructions that, when executed, instruct one or more processors to perform acts comprising: receiving a query in a first human language; determining that a first ranker that is trained for the first human language does not satisfy one or more criteria to be classified as a trained ranker that is associated with a particular degree of training; upon determining that the first ranker does not satisfy the one or more criteria, selecting a second ranker that is trained for a second human language, the second ranker being trained with a greater amount of training data than the first ranker; utilizing the second ranker to generate a set of search results for the query; utilizing the first ranker to reorder a predefined number of search results of the set of search results; and providing the reordered search results.
19. The one or more computer storage media of claim 14 , wherein the second ranker is selected based at least in part on an amount of training data that was used to train the second ranker.