Here's an example. Not my text. Asterisks inserted for obvious reasons.
"One helpful feature to assist you in finding the channel you want is the filter. At the top of the page of section results is an option called Current filter. Click on this to bring up a popup with your filter options. To use this panel, click on where it says Filter set 1. A text box will appear and you can add a filter term here. For example, type in the word “s*y” and press ok. Now make sure that the Choose your filter option is set to Set 1. Click ok to close the popup. Now you will see only sections which include the keyword “s*y” in their channel names, which can help you find the channel that you want"