It is possible to use lyrics to search for the title of a song. Entering song lyrics into a Google search usually retrieves pages with the full song lyrics. Users can also search for songs on lyrics databases such as AZLyrics.
A Google search for a single phrase in a song usually finds the song title, full lyrics and a music video, if applicable. The more words entered into the search, the more specific the results.
Searching for a phrase on AZLyrics returns songs that have the phrase in their title as well as songs that contain some or all of the words as lyrics.