If your topic is more specific than a subject search, you can combine words in a keyword search using the connector word AND. Keep in mind that keywords are not necessarily subject words. For example, a keyword search for surgery will find books on surgery, but also books with the word surgery mentioned anywhere in the book record or used in a different way, such as Rocket surgery made easy. A subject search for SURGERY will give you a list of all subject headings with the word "surgery" in them. Some examples of keyword searches include:
Results from your keyword searches will help you identify appropriate subject headings.
NOTE: The asterisk (*) truncates a term and will retrieve all forms of the word that follow the truncation symbol. For example, surg* will retrieve surgery and surgical. The asterisk can also be used as a wildcard for an unknown letter, as in wom*n, etc.