Google Mobile Search has a new interface for related searches. Google usually shows up to 8 related searches at the bottom of the search results pages, but now the list looks different: there’s a table with white rows and small arrows next to each related query.
Click a related search and you can see the search results for that query and even more related searches. You can start with a generic query like [nightingale] and create a more specific query by only clicking on related searches. For example, you can find searches like [sound of a nightingale singing], [Yanni nightingale live] or [how do you become a nightingale in Skyrim?].