Many controversial topics assigned for papers are quite broad. A few examples:
While you can use these terms in your searches, you will probably need to add some keywords to help narrow your topic:
You may also want to use exact phrases to narrow your search, by enclosing the phrases inside quotation marks:
Do you need Peer Reviewed or Scholarly sources only?
Look for an option to refine your search; it will usually be a checkbox or a facet you can select.
Here's how it looks on a set of OneSearch article results:
The words “pro” and “con” are usually not good keywords. Try one of these in combination with your topic keywords instead:
Keywords that may help you find a "con" opinion:
Keywords that may help you find a "pro" opinion: