For visa, contact Vietnamese Consulate or Embassy in your country, or you can obtain e-visa online.
Please see below link for more instruction about e-visa to Vietnam:
https://evisa.xuatnhapcanh.gov.vn/trang-chu-ttdt
Required:
- Passport valid for at least 6 months past your return date
- One passport photos (4x6cm)
- USD $25.00 processing e-Visa fee per person