By default, Subjects are organized in alphabetical order. By default, clicking on "Subjects" from the left navigation menu will display all published Subjects.
To see all Subjects, click on "All", and to see unpublished Subjects, click on "Unpublished".
You can also search for a Subject using the search bar at the top of every page, but keep in mind that the search will only apply to the group shown in the section below. So, to search all Subjects, select "All" from the filter list, then search for the desired Subject title.