11. A client system, for processing query information, comprising: one or more processors; and memory storing one or more programs to be executed by the one or more processors; the one or more programs comprising instructions for: receiving a partial search query from a user; prior to receiving a search request from the user on a complete search query that includes the partial search query, sending the partial search query to a server system; receiving from the server system, a set of historical complete search queries, the set of historical complete search queries corresponding to the partial search query and ordered in accordance with a ranking criterion; receiving from the server system, prior to receiving a user selection of one of the set of historical complete search queries, predicted search results corresponding to one or more search queries of the set of historical complete search queries; and displaying at least a subset of the set of historical complete search queries and at least a subset of the predicted search results.
11. A client system, for processing query information, comprising: one or more processors; and memory storing one or more programs to be executed by the one or more processors; the one or more programs comprising instructions for: receiving a partial search query from a user; prior to receiving a search request from the user on a complete search query that includes the partial search query, sending the partial search query to a server system; receiving from the server system, a set of historical complete search queries, the set of historical complete search queries corresponding to the partial search query and ordered in accordance with a ranking criterion; receiving from the server system, prior to receiving a user selection of one of the set of historical complete search queries, predicted search results corresponding to one or more search queries of the set of historical complete search queries; and displaying at least a subset of the set of historical complete search queries and at least a subset of the predicted search results. 15. The system of claim 11 , wherein the predicted search results are received prior to receiving from the user the search request on the complete search query that includes the partial search query.