Use the phrase "book review" combined with an author, title, or subject. Tips:
Popular book reviews are found in mainstream periodicals such as Time Magazine and newspapers, and tend to be short. Reviews may appear up to one year after the book was published.
Scholarly reviews (including "critical" and "literary" reviews) are found in peer-reviewed academic journals or other authoritative compilations, such as websites maintained by scholarly societies, or books that compile reviews and criticism. Reviews may appear up to three years after the book was published.
Keep in mind that many books are never reviewed.