In Section 3.3.1 the book states "Each criteria can be used with a search term and supports the * character (star, asterisk) for pattern matching. E.g., you could search with the Group search criteria and search for org.sonatype.nexus.*. This would return components with the group of org.sonatype.nexus, but also org.sonatype.nexus.plugins and many others."
But, applying the asterisk for the Keyword field seems to work.
Update the example to Keyword search, instead of Group search.