You can choose to run a Simple Search or an Advanced Search at any time.
Simple Search lets you quickly enter search terms and see a broad list of results. A simple search looks for any match in an item's Title, Author, Keyword, Subject, Description, Publisher, Date, ISBN, Call Number, and more.
Advanced Search lets you specify more options for your search and gives you more control over the results that you see. You can select specific fields like Author, Title, or Call Number, and you can select a specific Material Type (format) or Publication Date.
See Improving Your Results for information on other search techniques.