Method of displaying by a client application in communication with a search engine a plurality of user-selectable refinements to a search query including a search term, comprising: sending the search query; receiving search results and suggested search query refinements determined based at least in part on an analysis of groups of related search queries, each suggested search query refinement corresponding to a refined search query including the search term and an additional search term; displaying search results and, apart from a search bar, refinements, refinements being selectable by a user via a graphical object; receiving a selection of one of the refinements, the selection corresponding to a refined search query including the search term and an additional search term; receiving refined search results; and displaying refined search results and a visual representation of a refinement relationship between the search query and the refined search query. Related systems are also disclosed.