1. A computer-implemented method executed by one or more processors, the method comprising: determining, by the one or more processors, that one or more in-depth article search results are to be provided in response to a query; obtaining, by the one or more processors, a topicality score for each in-depth article of a plurality of in-depth articles, each topicality score indicating a degree of relevance of a respective in-depth article to the query; obtaining, by the one or more processors, a document score for each in-depth article of the plurality of in-depth article, each document score being based on a respective topicality score and a respective in-depth article score; selecting, by the one or more processors, one or more in-depth articles from the plurality of in-depth articles based on respective document scores; and providing, by the one or more processors, the one or more in-depth article search results for display, each in-depth article search result representing an in-depth article of the one or more in-depth articles.