You are downloading the Learn Vietnamese XAP file v220.127.116.11 for Windows Phone. Learn Vietnamese is a free and useful Education app: You don't have to know anything about the Vietnamese language to use L-Lingo Vietnamese to equip yourself to converse in Vietnamese. L-Lingo ... You can now download the offline XAP file to install & try it.
Download Locations for Learn Vietnamese 18.104.22.168 XAP file
To try to install it manually from an SD card, you should choose one of the server location above to get the offline Learn Vietnamese XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.