Once you get some search results, you're on your way! You'll usually need to dig deeper, though. Databases have facets below the search box or next to the search results that let you refine your search. Here are some suggestions:
1. Only look at peer-reviewed journals - usually there's a check box or a link next to the words peer-reviewed or academic journals
2. Change the publication date range - try only looking for articles from 2010-present, for instance
3. Limit to full-text - Databases include indexes, which means you can find information on articles even if you don't have access to the articles themselves. If you want, you can limit your search to only the articles you can read in full.