You could start by contacting the group that was translating the earlier volumes and see if they are still working on it (politely of course!). http://tenko.fansubban.org/
They are also looking for a translator. Taken from their blog:
"As for Qualia, here things do get a bit more complicated. I can’t translate, and unlike Adachi stuff, Qualia’s text is on a whole different level. It’s not just anyone that can grab a series like that and deliver a quality translation, and seeing as both of our translators for the series are pretty much not doing anywork for an indefinite amount of time, I just can’t tell what’s going to happen to it. It’s not “dropped”, but I’m not going to lie — think of it as being stalled, at the very least. Seeing as releasing a low quality translation isn’t an option for us, unless someone qualified shows up and is willing to finish the series, I can’t comment on when/whether more Qualia will happen."
