Elastic search Indexed content retruns nothing with title should query

As I already said:

Could you provide a full recreation script as described in About the Elasticsearch category. It will help to better understand what you are doing. Please, try to keep the example as simple as possible.

A full reproduction script will help readers to understand, reproduce and if needed fix your problem. It will also most likely help to get a faster answer.

But anyway, here try with kathikeya instead of Kathikeya.