Depending on your topic, you may want to explore some of these research databases. If your topic is multidisciplinary, meaning it might fall into a few areas (social work, psychology, etc...) you may want to search several databases, or, you may want to search using a broader search tool, like Library Search, or Google Scholar.
The following links allow you to browse journal titles that cover content in the field of social work. By browsing current issues of journals in your field, you can get a sense of the topics being studied by researchers, and you might even notice some trends.