54. The at least one tangible computer readable medium of claim 34 , wherein generating the second of the at least two search queries further comprises: performing speech recognition on the voice input using the second language model to generate a first recognition result for the voice input; determining a topic of the voice input by analyzing the first recognition result; determining that a topic-specific language model is appropriate for the topic; performing speech recognition on the voice input using the topic-specific language model to generate a second recognition result for the voice input; and wherein generating the second of the at least two search queries further comprises using the second recognition result to form the second of the at least two search queries.
56. The at least one tangible computer readable medium of claim 54 , wherein the second language model is a general language model.