"The literature review chapter in the thesis, then, justifies the proposed research by identifying trends or gaps in the literature, and, by a review of relevant studies, demonstrates that you understand the relevant literature and shows how your study will contribute to that body of knowledge."
Burton, Suzan, and Steane, Peter. Surviving Your Thesis. London: Routledge, 2004.
Try using a search strategy worksheet to identify key concepts in your research question:
(From program developed by librarians from Ohio universities)
The Research Methods in Literature Review tutorial is available via the Researcher Development portal here including access instructions: https://nuigalwayie.sharepoint.com/sites/rdc/SitePages/Epigeum-Research-Skills-Toolkit.aspx
The Library proactively supports and enhances the learning, teaching, and research activities of the University. The Library acts as a catalyst for your success as University of Galway’s hub for scholarly information discovery, sharing, and publication.