Hi Priya,
You can try this. Generate a GuiXT Script for the Search Help window. Inside that, use the following code:
////////////
on "enter" process="do_nothing.txt"
///////////
Create an input script, named "do_nothing.txt" and use the following line of code:
/////////
return
////////
Word of caution: Please be careful while deploying the scripts, as Search Help is a common window used in multiple context.
Let me know if this works OR if you have more queries.
Best,
Vishal