Two useful searches to explore are disability and people with disabilities. Type in the keywords in the Search All textbox and click the search button. You can also use the Boolean AND to help with combining searches, such as learning AND disability.
After clicking the search button, modify the focus by selecting subcategories in the Refine My Results column on the left.
Check out the Primo Help link for more search details.
Disability by 
People with Disabilities by 
People with Disabilities by 
Encyclopedia of Disability by 
The Encyclopedia of Learning Disabilities by 