Hi Neetu,
Thank you for raising your concern.
Could you try using the Keyword Planner in the Google Ads UI with the same parameters as your AdWords API request and see if the result would be the same? If the result would be the same then it means that it is the intended output. You may then reach out to the product experts via the Google Ads Community Forum should you require further assistance in determining why the output was returned that way.
Lastly, should you encounter any discrepancies, let me know right away so I can further investigate. You may send to me the complete SOAP request and response logs and the complete screenshot of the Keyword Planner and you may send those via the Reply privately to author option.
Regards,
Ejay
Google Ads API Team