These manuals were originally only released in Japanese. What you're looking for are English fan translations of these. Unfortunately for you I haven't seen those anywhere, but perhaps someone here can prove me wrong. If so, I'd be mighty interested as well
I believe that the Turbo-R it was thought for the Japanese market, and even that some resellers ( Here in Spaisn, LASP ) sold it for other countries, the manuals were not translated.
I have to make an scan of the book of BASIC for Turbo-R with a program of OCR that admits Japanese or Kanji, and later to use a translator, a lot of work.
I like the idea, the book the girl and the whole day to translate commands, instructions, Peeks & Pokes, Tips & Tricks...................., very good idea.
Hahahahahahaaa Poor girl...! and me that..?, with my book and my Turbo-R.....
Well ok all right then we don't stray of the topic!, Turbo-R manuals translated now !!! to English, French or Spanish, pleeeeease today better than tomorrow.