Science Direct cannot limit its search to only the content to which the Library subscribes.
When you search Science Direct, you will see results with a “Download PDF”
link—those are articles from journals to which we subscribe or from open access journals, and can be accessed immediately, online.
You will also see articles with a link labeled “Get Access”
—never use that fee-based service to access an article—use the Library’s Interlibrary Loan (ILL) service, linked from the Library home page, to request that we get a copy of the article for you (at no charge).