Here's an example search in Academic Search Complete (updated version of Academic Search Premier):
Text-only database tips:
Start your database search with keywords from your research question. You can then refine your search as you skim and learn new keywords. Enter your keywords in the search field at the top of the webpage.
Limit to up-to-date articles. As a rule, aim for articles no older than 10 years. Select your desired publication date(s) from the drop-down menu below the search field.
Limit to Academic journals to help focus. You'll still need to examine articles to make sure they're scientific and research-length. Select your desired source type from the drop-down menu below the search field.