searching for book by title does not result

[Richard]

If I search for this new book by title "What Is Nationalism and What Do Nationalists Want?"

It does not show up in the search results, why?

Here's the book:
"https://www.goodreads.com/book/show/2..."

[Martin]

It can take a few days for newly added titles to become searchable, use ISBN for recently added books as that becomes available quickly.
Presumably this is to do with how the data for search engine is updated but for more detailed reason you would need to ask staff.