When you type a query into Google it will suggest the most popular completions to the given prefix.

There are some remarkable contrasts, Slate found, between “dumb” searches and “smart” ones. People who start their search “how 2” are more likely to search “how 2 get pregnant” or “how 2 grow weed.” People who start their search “how one might” are more likely to search “how one might discover a new piece of music” or “how one might account for the rise of andrew jackson in 1828.”