Education theories and topics (i.e. inclusion, multiculturalism, special education) should be searched as "Keyword" to maximize the number of references to a topic.
When a subject heading is known, search the "Subject Heading" index. Examples of Library of Congress Subject Headings are: "education", "special education", and "inclusive education". When you type in a specific Subject Heading, an alphabetical list will appear to help you narrow or broaden your searching.
Most books about education are found in the "L" section (L, LA, LB, etc.).