Teramind does not support monitoring of bluetooth file transfer at the moment. However, you might be able to capture such activity on one of the BI reports, such as the Applications & Websites report:
In the above example, image files were shared from a laptop to an Android device using the Send/Receive files via Bluetooth option on Windows.
You can also restrict users' access to Bluetooth and Wi-Fi network from the Monitoring Settings > Advanced panel:
Click the enable then RESTRICTIONS, then enable DISABLE WIRELESS ACCESS (WI-FI, BLUETOOTH).