i already change to cgminer 3.7.2 like other use but still no sharing or nothing.
That appears to be a common issue with Gridseeds:
https://bitcointalk.org/index.php?topic=941363.0
https://bitcointalk.org/index.php?topic=596037.0
https://bitcointalk.org/index.php?topic=494625.msg6193837#msg6193837
Check your power supply.