1. A method performed by one or more computing devices, comprising: obtaining a set of trending keywords from search queries; identifying a trending topic associated with a subset of the search queries that include at least some of the trending keywords; identifying search results that were returned to the subset of the search queries and selected by users; identifying other search queries that are not in the subset of the search queries but that return the selected search results; and, creating a dataset for the trending topic that includes the subset of the search queries and the other search queries mapped to the selected search results.