Minh co e-mail cho NVC de hoi ve case number , va minh da nhan duoc e-mail tu NVC , nhung ko hieu ho noi gi , nho Anh chi dich giup :
Dear Sir/Madam:
The National Visa Center (NVC) received your inquiry. Unfortunately we do not have any record of receiving your petition. If your petition was approved more than 15 days ago please e-mail a scanned copy of your I-797 or I-171 Notice of Action - Approval Notice to
NVCResearch@state.gov. Please type the receipt number in the subject line of your e-mail and include only one attachment/case per e-mail. We will contact the Department of Homeland Security's Office of U.S. Citizenship and Immigration Services (USCIS) on your behalf to locate your petition.
If you received the form I-797 or I-171 Notice of Action - Approval Notice indicating that your petition has been retained by USCIS, or another type of Notice of Action that is not an approval notice please contact USCIS for additional information.