Most databases do not allow you to limit your search to secondary only - you will need to search for magazine or news articles on your topic and then look through the search results to find articles that are about your topic and do not describe primary original research.
Search Tips: Magazines & News
Search for your keywords & then use a publication type filter to limit to magazines or news sources.
Examples:
Search Tips: Other Databases
Try keyword searches in other databases - each database different publications from one another.
Other databases to search:
Scholarly/peer-reviewed, magazine and newspaper articles for most subject areas. Includes full-text for 9,000+ and indexing for 15,000+ publications. Also includes book chapters, Associated Press videos, encyclopedias, reports, conference proceedings, etc. Coverage: As early as 1887-present.
Scholarly/peer-reviewed, magazine and newspaper articles for most subject areas. Includes full-text for 8,000+ and indexing for 17,000+ publications. Also includes book chapters, encyclopedias, reports, conference proceedings, etc. Coverage: 1980-present.