For news or research articles, start with multi-disciplinary databases and subject specific databases.
Open Academic Search Ultimate. Select Choose Databases and select MasterFile Premier, PsycArticles and PsychInfo.
A bit further into my research, I have become interested in knowing what scholars are saying about Native Americans living in urban areas.
1. Native American = 29,000 results
2. Add urban areas = 240
3. Limit to Scholarly Journals = 181
For author biographical or literary criticism of works, try the Literature Databases.
Library databases:
A-Z list and by subject
Your topic may concern subject areas such as education, health, history, etc. You may consider searching within databases that contain articles that were published in subject-specific journals.