There is an Advanced Search screen option located at the top left of the basic Discovery search screen. This will allow you to search for multiple terms and set parameters for your search.
Notice that on the right side of your screen, you are searching in WorldCat.org, which means you will find many results for your searches. If you would like to search in only one database, you will need to click on the drop down arrow next to all Databases to select your single database to use.
