Broad resources like the ones in the Exploration tab help to place your topic in the context of the broader discipline that you study, reveal useful search terms, and - best of all - stimulate questions that inspire your writing.
When a reference tool is too broad, it can be useful to seek out a book, and sometimes scholars get together to tackle a subject, breaking it apart into chapters written by experts on that specific subtopic. We call those books anthologies, and they can be very helpful in choosing a rabbit hole, so to speak.