Hi Pavan,
You can just enter the strike price along with the option type. For Instance, if you want to find Nifty 14500 CE Jan Expiry, you can just enter "14500CE" in the search bar. You'll find "Nifty 21Jan14500CE" in the dropdown. 21 is the year, Jan is the month and the date will not be available in the monthly expiry.
Hope this helps!
