1. A device, comprising: one or more processors to: receive information that comprises a search query; cause a first search of internal documents to be performed, using the search query, to identify one or more internal search results; cause a second search of external documents to be performed, using the search query, to identify one or more external search results; cause the one or more internal search results and the one or more external search results to be presented for display, the one or more internal search results being presented for display to visually distinguish the one or more internal search results from the one or more external search results; receive a first indication indicating that an external search result, of the one or more external search results, has been flagged for review; provide, based on receiving the first indication, a notification that the external search result has been flagged for review; determine that the external search result has been approved for presentation as an internal search result based on providing the notification; store a second indication indicating that the external search result is to be identified as an internal search result for a future search based on determining that the external search result has been approved for presentation as an internal search result; cause a third search, that identifies the external search result, to be performed after storing the second indication; and cause the external search result to be presented for display as the internal search result based on the third search and further based on storing the second indication.