Trying to search for these quite old digital removed eng releases:
Deep Freeze Cafe
VNDB: https://vndb.org/v16053
Ragnarok: Believe (windows version)
VNDB: https://vndb.org/v15529
Silent Nights
VNDB: https://vndb.org/v18019
Chibi Kocchi
VNDB: https://vndb.org/v13394
Noda & Naruko's Naughty...