1. A system, comprising: a data processing apparatus; and a memory storage apparatus in data communication with the data processing apparatus, the memory storage apparatus storing server instructions that when executed by the data processing apparatus cause the data processing apparatus to perform operations comprising: receiving from a client device a request for a search resource; providing to the client device in response to the request the search resource, the search resource including: first instructions that cause the client device to generate a search interface that includes a first query input field; initial query suggestions; second instructions that cause the client device to: store the initial query suggestions in a suggestion store on the client device; compare query characters input in the first query input field to the query suggestions stored in the suggestion store; select query suggestions that match the query characters input in the first query input field based on the comparison; and display the selected query suggestions as query suggestions for the query characters input into the first query input field.