The terms used in subject systems are made up by other humans, and humans always are biased. As a researcher, you will get more out of the various subject systems of the various reference tools, if you use the subject terms the system uses. Learn to translate your terms into their terms to get what you want and then go back to your terms. Once you have these names, it is much easier to search the reference works. Names can and do vary from work to work but nowhere as much as subject terms do.
Names tend to vary as they travel from language group to other language groups.
Once you have names your research is pretty well mapped out. The New College ILL can get most anything you need, within limits. Always check to see what is in the New College Library. Separate what is not here into Rush and Later groups. Probably each person has a different way of mulling over a body of knowledge, which mulling can lead to interesting fermentation.