How can i enable the text serct for intercation is not working in sm9.40
If you mean Search Interactions, enter data on Text Search tab, and Search, then this is using IR Expert.
1) make sure you do not have IR disabled. Check the sm.ini file for ir_disable:1
2) Make sure the sm -que:ir process is running and configured in your sm.cfg file
By not working I assume you mean it did not find any records. If you received any messages let me know.