Sucks doesn't it? This is one thread that pops up in forums once in a while.
1) They don't have a website (or if they do it's looked in some german vault somewhere)
2) Try searching places like Diabolik... or websites like Sex Gore Mutants, who always lists their new releases in their news section.
Only ones I can remember are the Argento movies like Phenomena (uncut), Tenebre (a few seconds added to it), Woodoo, Dellamore Dellamorte (get the Italian version) etc.