There may be some limitations on finding reviews on Amazon where a buyer left a one-star review but no specific review. Amazon generally takes the privacy and anonymity of buyers very seriously, so it is not always possible to directly view a specific buyer's review.

However, you can try the following methods to find one-star reviews:

1. Seller Central: Log in to Amazon Seller Central and go to the "Orders" or "Order Reports" section. Sometimes, you can view some buyers' reviews through Seller Central.

2. Notifications: If a buyer leaves a one-star review, you should receive a notification. Check for notifications through Amazon Seller Central or the Seller App, which may include a summary of the one-star review.

3. Contact Amazon Support: If the review is causing problems for you, you can try contacting Amazon Seller Support to explain the situation and ask if you can get more information. They may be able to provide some help if appropriate.

Please note that Amazon has some regulations to ensure the privacy and information security of buyers, so not all reviews can be viewed directly by sellers.