لقد قمت بتكليف شخص ما لإحصاء الكتب ذات العنوان " السعادة" التي نُشرت في الخمس سنوات الماضية وقد أعطاني حوالي 40، وهناك المزيد أكثر.
I had somebody count the number of books  with "happiness" in the title published in the last five years  and they gave up after about 40, and there were many more.