Vietnam visa for Singaporean citizen

If I apply for a visa for a Singaporean lady. Is it possible to request a 3-month visa instead of the 30 day visa exemption?

What supporting documents do I need to request a 3-month visa?

Thank you,

Dear Lanly,

Please be informed that as a Singaporean, you can apply for 3-month visa on arrival to Vietnam if you do not want to use your 30-day Vietnam visa exemption.

To apply online, please access to:

Wish you a great day,