How to display keep searchable phone number in create invoice form, names are repeating and its quite painful to find the exact one

In create invoice form please help me to add a functionality so that phone number is aslo displayed and is searchable in clients drop down.

With only Client Name its troublesome as names are repeating and i am facing problem.
Help Fast.

You can try to develop yourself too. haha
I already created my own filter in order to make easier to do searching when a lot invoices/quotes.
DO some jQuery filtration for yourself =)

please help me in that as i am novoice and dont have much knowledge about jquery please