PhilPapers is a scholarly article database with a uniquely detailed browsing feature, which can be helpful for exploring or discovering topics within a philosophical framework (like ethics).
In PhilPapers, select "Browse > All Categories" from the menu to see the complete list of categories (more than 5,000!) and use your browser's "find on page" tool to explore using keywords like "feminism," "health," "bioethics," etc. Click on a category to explore philosophy articles on that topic.
Find scholarly articles in subject-specific databases.
These databases contain citations & full text for scholarly articles in a variety of fields.