To find books on a specific topic, try doing a subject search
How do you do that?
From the library homepage, go to Omni (books and more) and choose the Browse tab.
Select Subject from the drop-down menu.
Type in your search term- for example - Marketing and then click on the Search button
The number after each heading indicates the number of titles. Books can have many subject headings - looking at the headings for a particular book may give you ideas of other subject headings to search.