Here's what I can gather:
If you're looking for a calculus textbook, I recommend checking out the original English edition or other translated versions that might be more widely available. If you're specifically interested in the Vietnamese edition, you might want to try searching for online libraries or bookstores that carry the PDF version. Giai Tich Calculus 7e - Tap 1 Pdf
Here's what I can gather:
If you're looking for a calculus textbook, I recommend checking out the original English edition or other translated versions that might be more widely available. If you're specifically interested in the Vietnamese edition, you might want to try searching for online libraries or bookstores that carry the PDF version.