You can access the Advanced Search function by clicking on the last button in the row on the top of each page
This will open the advance search window
By using the different filters provided you can taylor your search, for example by age, subject, channel source or library area or any combination of these.
Here is a screen that shows the subjects filter
The following shows a result for 'The Roman Empire' filtered by Anthropology, Geography, History and Natural History and returns 27 results.
and the first 5 programmes returned