You can search by subject in the Legal Classics database. Find the Advanced Search option at the top of the main page. From within the search options screen, you can input your terms and select 1 or multiple subjects to search across. To see how this works, take a look at the example search below, searching for the phrase “Italian Republic” in text across the subject Jurisprudence.
Keep in mind, if you are using the Subject search option, you cannot use the Select Titles option.