It looks like you're using Internet Explorer 11 or older. This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results.
How to search Scopus with the keywords "linear regression"
When searching for articles containing the key words linear regression, enter "linear regression" into the search field. Make sure you use quotation marks. This will ensure that Scpous will only search for articles where linear and regression appear side by side. Search using the Article title, abstract, keywords field to get a large selection of results.