18. The medium of claim 17 , wherein each of the one or more of the plurality of network locations is represented by a corresponding first identifier and each of the one or more of the other plurality of network locations is represented by a corresponding second identifier, and wherein providing the translated identified content in the first spoken language and the identified content in the first spoken language in response to receiving the search query comprises: providing one or more first identifiers that represent the one or more of the other plurality of network locations from which the content in the first spoken language has been identified; and providing one or more second identifiers that represent the one or more of the plurality of network locations from which the content in each of the potential second spoken languages of the subset has been identified.
17. A non-transitory computer-readable medium storing software instructions executable by data processing apparatus to perform operations comprising: receiving a search query including content in a first spoken language, the search query relating to a topic based on a subject matter of the content included in the search query; determining a relevance of the topic of the search query to each potential second spoken language from a set of potential second spoken languages different from the first spoken language; selecting a subset of potential second spoken languages based on the relevance of each potential second spoken language to the topic of the search query, the subset having fewer potential second spoken languages than the set of potential second spoken languages in its entirety; translating the content included in the search query to translated content in each of the potential second spoken languages of the subset that is determined based on the content included in the search query; identifying content in each of the potential second spoken languages of the subset that satisfies the translated search query from the content included in one or more of a plurality of network locations that include content in each of the potential second spoken languages of the subset; identifying content in the first spoken language that satisfies the search query from content included in one or more of another plurality of network locations that include content in the first spoken language; translating the identified content in each of the potential second spoken languages of the subset into the first spoken language; and providing the translated identified content in the first spoken language and the identified content in the first spoken language in response to receiving the search query.