You can use the filter bar at the top of the courses page to select and view courses from a particular term. Just click the TERMS box to open a list of all the Term groups you have courses in (Term groups also include University Sites, Course Masters, Course Development and Testing, and College, School, Department, & Program sites).
If you are looking for a course, particularly a course from a previous term (or for a future term), it will likely not appear in the CURRENT COURSES list. Switch to the term in which the course was (or will be) offered and try searching there.