Disability Studies is a broad, interdisciplinary field. When searching for resources in the Library catalog and databases, be sure to include keywords that are about your specific topic to find better results.
Try these examples here:
Disability studies and film
Disability studies and feminism
Disability studies and sports
You can also try a subject search. Just as posts are tagged with certain topics on social media, librarians tag books with subjects to make finding things easier. This will give you a broader range of resources, but you know each one will be related to Disability Studies in some way.
Here's an example subject search on disability studies.