The search for „Welt der Kristalle“ in the provided vector store did not yield any results related to the title or the contents of a book with that name. It is possible that the vector store does not contain information on this specific book or that it is referenced under a different name or context that was not captured by the search query used. If „Welt der Kristalle“ refers to a specific book title or a known work, there might not be any data about it in the uploaded „cz_to_de.json“ document .
