When you run a search, make sure to look at the subject terms listed next to your search results (on the left in EBSCOhost databases). Think of these as hashtags on Instagram. You can then look for articles with those subject terms to find other potentially relevant items.
When you find a relevant article, explore the subject terms included to help you find more items.
Databases also have tools to help you discover subject terms.
Most EBSCOhost databases have a tool to help you discover subject terms. See EBSCO Academic Search Complete > Subject Terms. You will want to look at the top when ASC opens.