Scholar OneSearch, the large search box on the library's home page, is a way to search many of the library's subscription databases and the library's catalog, all at the same time.
Searching the library's databases from the home page will give you a list of results that is easier to refine than the results from Google Scholar. Options for lmiting your results include subject, language, and type of resource (peer-reviewed articles, books, or videos, for example)
You can also opt to use a single database. This option may be best if you have a specific topic, need to limit the number of your results, or want better control of your searches since the advanced features will let you narrow your choices.