If you would like to expand your search using one of the search results, click on the Add to Search icon which appears when you hover your mouse o the right of the information type in the Results Window.
A pop-up window will prompt you to confirm that you would like to include the selected entity in your search results. Clicking Add to Search will initiate a new search to retrieve available information associated with the selected target person.
Note that you can repeat the same Add to Search process with an Email address, Phone number, Alias, Name, Domain, or Password. Once you add a new piece of information to your search results, a new window will open.
The new search term, will show up on a separate line under your initial search input in the navigation pane on the left. Going forward, you can easily access the results of all your searches from this navigation pane.
Once Maltego Search has executed the new search using returned data, it will highlight the Entities you performed an additional search on.