As well as finding studies from academic journals, databases available from both EBSCOhost and Ovid Online, can also provide access to grey literature such as conference proceedings.
When performing a search in these databases it is worth limiting/refining your results to highlight any grey literature you may have found.
In EBSCOhost select the Publication Type limit.
In Ovid Online select either Publication Type or Source Type under the Additional Limits button.
See the Doing postgraduate research guide - grey literature for more guidance.