There are several approaches you can take to identifying published literature reviews:
1) Theses
Most theses contain extensive literature reviews:
Marketing strategies: How small restaurant businesses use social media (2017)
SEE: A Review of the Professional and Academic Literature p10 - 38 - 172 references
2) Literature Reviews Published as Journal Articles
Some journal articles published in scholarly journals consist entirely of a literature review.
SEE: Blockchain for the Internet of Things: A Systematic Literature Review (2016)
3) Journal Articles
Most research papers that are published in scholarly journals include a literature review by way of introducing the topic that is being researched.
4) Limiting Search Results to Literature Reviews When Searching Databases
- Include the term "literature review" in a keyword in title search
- Some databases include options to limit search results to literature reviews