From the Inbox view, the simple search can be accessed by clicking in the "Search current mailbox" field or by pressing Ctrl+E. I have seen people use a more advanced version of this search that has several fields (such as from, title, text body...). How do I open or access this more advanced search? (see picture below: basically what it is supposed to look like). This is not the "Advanced Find" (Ctrl+Shift+F), which is in a new window – this one is in the main window, just like the Ctrl+E search.
This is probably a 2 sec Google search but I cannot find the correct terms to describe what I am looking for. Thanks!