As you probably already know the US release of this series was cancelled after volume 12, ending at episode 60.
Where can I find the rest of the series? (preferably not in engrish)
There are several sites you can get the "engrish" version like e-bay and other hk sites. In case you weren't familiar with the series, the R1's stopped about 13 eps short of completing the "sanctuary" arc. Then comes the "Asgard" arc followed by the "Poseidon" arc to finish the series off at ep 114 The movies are independent and don't have any influence on the show.
The 13 ep "Hades chapter" was released about 10 years later after the tv's show's finale. That arc ended in a cliffhanger & that's where "Hades Chapter Inferno" starts which is currently being produced.
I have the 2 R'1 sets and had to get import dvd's to finish the show. The "Hades" set I got is a fansubbed dvdr & I'm anxiously waiting for the entire "Inferno" arc to be completed so I can get that too.