In EBSCO, search for "reviews" as a "subject term" across all the EBSCO databases at one time. Combine it with the title of the film, the director, or other search terms. The search below gives over 200,000 reviews across all the EBSCO databases.
You can also search the following relevant EBSCO databases individually:
You can find the full text of reviews in the New York Times published between 1851 and four years ago in the New York Times Historical. Go to the advanced search screen and choose "Review" as the document type.
Search the most recent four years of the New York Times in ProQuest Global Newsstream. Again, go to advanced search and choose document type "Reviews." The search below is set up to search just the New York Times (1980-present) and limit by document type "Reviews."
In ProQuest Global Newsstream, use the advanced search and limit to review (see the screenshot above for the New York Times).
In Nexis Uni, choose "news" on the search screen and add "review" to a keyword search. Reviews are not a document type you can limit to in Nexis Uni.