11. One or more computer-readable media not a signal per se storing computer-useable instructions that, when used by one or more computing devices, cause the one or more computing devices to perform a method comprising: receiving a search query; identifying a query context for the search query; analyzing the query context to identify one or more dominant concepts; identifying a location of each of the one or more dominant concepts within a concept graph; identifying a plurality of additional concepts having a relationship with the one or more dominant concepts within the concept graph; assigning a first weight to each additional concept representing a strength of relationship of each additional concept to the one or more dominant concepts within the concept graph; selecting a subset of the additional concepts based on the assigned weights to provide a set of expanded concepts; receiving a plurality of search results for the search query; analyzing each search result to determine whether each search result includes one or more of the expanded concepts; assigning one or more second weights to each search result representing a strength of relationship of each search result to the expanded concepts; varying a prominence of the search results such that one or more higher ranked search results are included in a listing on a search results page and one or more lower ranked search results are represented by one or more tabs on the search results page based on a combination of the first weights and second weights; and providing the one or more tabs for presentation in the search results page with the listing of the one or more higher ranked search results in the search results page.
11. One or more computer-readable media not a signal per se storing computer-useable instructions that, when used by one or more computing devices, cause the one or more computing devices to perform a method comprising: receiving a search query; identifying a query context for the search query; analyzing the query context to identify one or more dominant concepts; identifying a location of each of the one or more dominant concepts within a concept graph; identifying a plurality of additional concepts having a relationship with the one or more dominant concepts within the concept graph; assigning a first weight to each additional concept representing a strength of relationship of each additional concept to the one or more dominant concepts within the concept graph; selecting a subset of the additional concepts based on the assigned weights to provide a set of expanded concepts; receiving a plurality of search results for the search query; analyzing each search result to determine whether each search result includes one or more of the expanded concepts; assigning one or more second weights to each search result representing a strength of relationship of each search result to the expanded concepts; varying a prominence of the search results such that one or more higher ranked search results are included in a listing on a search results page and one or more lower ranked search results are represented by one or more tabs on the search results page based on a combination of the first weights and second weights; and providing the one or more tabs for presentation in the search results page with the listing of the one or more higher ranked search results in the search results page. 12. The one or more computer-readable media of claim 11 , wherein the search query includes one or more search terms and the query context includes the one or more search terms.