If you are required to sign in to use any library databases, use this spreadsheet to locate the username and password for the database: Passwords for Home Access.
Start your searches with broad keywords like Song Dynasty, Inca, Maya, Mali, Timbuktu or if you know something more specific like Tea Ceremony (in the case of Japan), try that.
Use CTRL+F to locate your PIRATES element in the article.
Think about other keywords related to your PIRATES element. Laws? Customs? Family? Role of women?