Take some time to think about your key terms and how they may appear in a database's search results.
Brainstorm your key terms and consider:
Veterans: veteran, veterans, military, soldiers, servicemen
PTSD: PTSD, post traumatic stress disorder
Develop an online search strategy using appropriate Boolean operators, proximity operators, and truncation / wildcard characters.
Many Ebsco databases include the expander "Apply Equivalent Subjects" that are automatically selected by default when performing unqualified keyword searches. This may be helpful with relevancy of results and discovery of terms in the established subject headings in the controlled vocabulary.
Each database will include limiters that are specific to the discipline.
Note: If you are in the habit of searching multiple databases simultaneously, you may be missing out on limiters that are specific to individual databases.
For example, in the PsycInfo database, here are recommended limiter helpful to this specific assignment:
Additional PsycInfo limiters that may apply to your particular search include: