Google Scholar is an easy way to search for scholarly literature available online. Librarians encourage you to wear your 'Critical Thinking Hat' when using Google and Google Scholar.
Why? Because Google and Bing only index around 4% of the information on the web!
Sometimes, you'll hit a pay wall, asking you to buy access to articles. Don't do this. The Library can get you the articles at no cost, either through our database subscriptions or Get It! (interlibrary loan).
Gaps in content exist. The library may have access to certain volumes or articles that Google Scholar does not.
It is best to go directly to the library databases when you want to find something scholarly. Or ask a librarian for help.