You can search by books just by putting the name of the book in the query. For example, to search for Jesus in the book of John, just put “John Jesus” in the search box.
To search for the names John and Jesus in the whole Bible, simple put quotes around John so we know its not a book name. “‘John’ Jesus” will search the whole Bible and not restrict to the book of John.
To limit by old or new testament simply put the words “old testament” or “new testament” in your search. So “Moses new testament” will search for Moses only in the new testament.