Welcome to Android Central! First, can you confirm that Bluetooth is turned on on the tablet? Second, have you followed the steps in the earbud's manual? For most Bluetooth headsets, the pairing process often involves pressing and holding a Connect button on the headset for a few seconds to initiate the pairing. Then it should show up on the tablet's Bluetooth menu. There might be an option on the tablet's Bluetooth menu that turns on active scanning for new devices, so check for that as well.