Default search is "unexpanded," meaning that your patrons will only get physically or electronically available results unless they click a filter to expand their search. Your campus may have chosen to change the default search to expanded.
Boolean operators need to be capitalized in order to work
Users may choose to "personalize" their search results, which doesn't change the results themselves, but reorganizes them by category, based on the HILCC (Hierarchical Interface to Library of Congress Classification).
