While a user can currently search for content by using 'Advanced search' functions, it would be useful to be able to have a more intuitive drop-down menu that allows for additional search terms like organization. By searching for an organization, users could then see all of the content they have shared.
For example, the Ontario government publishes data on ArcGIS Online under several different names (Land Information Ontario, Ontario Ministry of Natural Resources, etc.). If a user could search the organization list for 'Ontario', they could see all of these different institutions listed and then be able to see everything one of those institutions has published.