It’ll be interesting to see how well this works and scales
Google searches now make associations based on the meaning of words, and post on the bottom of search results pages key phrases related to the query. If someone searches for "principles of physics," for example, related phrases ranging from "special relativity" to "big bang" will be listed for people interested in those terms.
Lengthier snippets will be returned to provide better context when users type out longer or more complex search terms. The query "spice market review shrimp starter dessert," for instance, will yield three or four lines of text from restaurant reviews under the search results headline, rather than just a line or two of text for most shorter queries.