How can I find my Bug-report that I submitted from the Desktop on launchpad?

I have found a partial solution to my own question:

The program that sends the Bug-reports from the desktop is called apport.
It doesn't requires a launchpad account. The service `whoopsie` submits the Bug-Report directly to the server daisy.ubuntu.com
(I'm not sure if those bugs actually appear on launchpad publicly.)

But I found my Bug-Report on my Harddisk in `/var/crash/` .

From there I can copy and paste parts of the file to my opened bug on launchpad.
Thanks for your tips.

*Original question*:

I had a severe bug, and I found someone with the same problem in launchpad. After I found a temporary fix I was able to submit the bug with the ubuntu-bug-reporter.

How can I find this ubuntu-bug-reporter generated bug-report in launchpad?
I would like to combine those two bug-reports (mark as duplicate). Because the generated one has all the debug information and the other one has the description of this bug.