Finding one article on your topic can often lead to a lot more! Browse the references of the article to find sources cited in their literature review. The authors are likely experts on the topic and have already done the searching for you!
Some tools can also help you find sources that have cited the one you are reading since it was published. By nature, these will be more recent!
There is often a feature built into library databases that provides a linked list of references. In Spartan Search, click the red arrows next to the article's title to find the article's References (the downward-facing arrow), and articles that have cited this title (the upward-facing arrow).
Don't see that option? You can manually copy that title into Spartan Search, ideally in quotation marks, to look for the full text. If you don't find your article, you can try searching on Google Scholar to see if there is a free copy available. Free copies are linked to the right of the article title.