When you type text into the search field and click the [Search] button, the following items are checked and a list of matching organizations (along with their Activities with public visibility and active General Interests) are displayed:

You can also search for opportunities by clicking on any of the buttons below the search field. These buttons correspond to the Classifications you have created at the enterprise level and have associated with Activities and General Interests in your organizations. You can override the default labels that will be used for the various search options by editing your search labels.