She answered the phone and, to her great 'joy', heard her son's voice on the line. [=she felt very happy when she heard her son's voice]
“You've spent hours looking for it. Any 'joy'? [='luck']” “No 'joy' whatsoever, I'm afraid. I can't find it.”
They were 'shouting/jumping for joy'. [=they shouted/jumped because they were very happy]
(..) It's Philippe. Well I... I'm calling you because I really wanted to hear your voice. And so far, your "Hello" already fills me with joy. Hold on. I'm gonna get her. Stop with your complicated sentences. - Hello. - El'onore? It's Philippe. Philippe? (..)2011 The Intouchables