To narrow your results, you should use the "Index of" syntax with specific modifiers. Try searching Google or Bing with these strings:
If "City Lights" is also the title of a book, an index for it might list:
The term "City Lights" refers to a wide range of subjects, including Charlie Chaplin’s iconic 1931 romantic comedy-drama, which follows the Tramp’s efforts to help a blind flower girl. It also represents the famous San Francisco bookstore and publisher central to the Beat Generation, an Indian drama film from 2014, and various technical terms related to automotive, urban, and botanical subjects.
If you are looking for a specific file or document, try using Google search operators, such as intitle:"index of" citylights , to bypass standard search results and go straight to open directories.