Selecting books that do not fit

I thought I was bright and brilliant enough to select books geared at Japanese learners of English that can be alternatively exploited for Japanese. Few are and I have spent too much on many books that do not qualify. I had the impression that 国際学会のための科学英語　was a candidate and bought it. Too bad, and expansive at that. It's a good book, maybe, but for Japanese only. Actually, few of the 英会話 steady stream of books easily fit the reverse engineering for learning more Japanese.