Voxa is a Romanian subscription service (like Netflix for books). For a monthly fee (approx. 35 RON), you get access to thousands of ebooks and audiobooks. Forta Gandirii Pozitive is almost always available. You can "borrow" the PDF as long as you remain a subscriber.
If you are looking to download the book, here are the best avenues: Forta Gandirii Pozitive Norman Vincent Peale Download Pdf
If you prefer a physical copy or an e-book version, you can: Voxa is a Romanian subscription service (like Netflix
Power of Positive Thinking, Norman Vincent Peale - DickyRicky you can: Power of Positive Thinking