I'm sorry if my title is confusing, I'm fairly new to excel.

Below is a sample image, basically what I want to do is be able to filter the Topics. But when I filter to see -- Climate Change for example -- it does not show that it is a topic for the "Duis vulputate tempus" book. Would like to ask how I can connect the Title to all the Topics related to it. Thank you all in advance.

XeC2X.jpg