When searching in library databases, it is important to search using the essential key concepts that make up your topic because the more terms that you use in your search, the fewer results you will get.
For example, a search like
impact of gender on people's salary expectations will get you far fewer results than if you searched for
gender AND salary AND expectations.
Reference Resources at the DU Library provide basic information about your topic, including keywords, people's names, or place names. If you are focusing on a particular academic discipline like psychology, education, or business, take time to look at subject encyclopedias and other reference sources in your field to find basic information on your topic and to discover new keywords.