There are probably dozens if not hundreds of posts on this in the past six months. Using .bomb for any *A awards is a waste of time. I routinely find availability on Aeroplan on LH that .bomb doesn't show.

If you're not using Aeroplan and/or ANA's site or have another source for *A awards, you're only reliable or semi-reliable source is still just to call. And call again if you see availability on Aeroplan but the United agent doesn't see it.