1. A computer-implemented method, comprising: receiving, by one or more processors, a search query generated by a user; determining, by the one or more processors, a type of expansion to apply to the search query; automatically generating, by the one or more processors, a plurality of different expanded search queries according to the determined expansion type without intervention from the user; executing, by the one or more processors, a separate search on each one of the plurality of different expanded search queries to retrieve search results; and providing, by the one or more processors, the search results of the separate searches on each of the plurality of different expanded search queries for presentation to the user in a plurality of different modules, wherein each module comprises search results for one of the expanded search queries.
14. The method of claim 1 , wherein the type of expansion is a subcategory and each of the expanded search queries comprises: the search query; and a subcategory of the search query.