Hi Dung Nguyen Tri,
Thank you for reaching Microsoft Community.
The Surface Standard Limited Warranty and Microsoft Complete are applicable only in the country where you purchased your Surface. Please see this page for more details: Surface warranty: FAQ - Microsoft Support.
Please reach out to our live support for options available and for further assistance considering that you are in an unsupported region. You may reach them through these options below:
1: Through the Surface app
Open the Surface App and select Help & support > Get help.
Type in the problem you need help with.
Look at any available solutions offered and select Contact Support.
2: Through the Contact Us - Microsoft Support page
Go tohttps://scanmail.trustwave.com/?c=10354&d=hvPq43orWVV6MIb5q8LX0B54LSw52WsgpnPasslMog&u=https%3a%2f%2fnam06%2esafelinks%2eprotection%2eoutlook%2ecom%2f%3furl%3dhttps%253A%252F%252Fsupport%2emicrosoft%2ecom%252Fcontactus%26data%3d05%257C01%257Cssri%2540microsoft%2ecom%257C54647b58c8ce44e7de8508dac19671af%257C72f988bf86f141af91ab2d7cd011db47%257C1%257C0%257C638035149195769168%257CUnknown%257CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%253D%257C3000%257C%257C%257C%26sdata%3dc0IcXJ%252FClUZITEDrQL%252BRpSFlV8aXwkndcr%252F7XAvXSJs%253D%26reserved%3d0Contact Us - Microsoft Supporthttps://scanmail.trustwave.com/?c=10354&d=hvPq43orWVV6MIb5q8LX0B54LSw52WsgpnPasslMog&u=https%3a%2f%2fnam06%2esafelinks%2eprotection%2eoutlook%2ecom%2f%3furl%3dhttps%253A%252F%252Fsupport%2emicrosoft%2ecom%252Fcontactus%26data%3d05%257C01%257Cssri%2540microsoft%2ecom%257C54647b58c8ce44e7de8508dac19671af%257C72f988bf86f141af91ab2d7cd011db47%257C1%257C0%257C638035149195769168%257CUnknown%257CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%253D%257C3000%257C%257C%257C%26sdata%3dc0IcXJ%252FClUZITEDrQL%252BRpSFlV8aXwkndcr%252F7XAvXSJs%253D%26reserved%3d0and select Devices.
Choose your preferred support method.
Type in the problem you need help with.
Look at any available solutions offered and select Contact Support.
Kind regards,
Marrion