How to Search a particular term across all the entities?

Hello, 

How to Search a particular term across all the entities like account contact opportunities etc  including activities, annotations and similar entities and all attributes/properties of these entities. preferably using sdk or some API.

Say i give a keyword Gabriel, i want result such as key word Gabriel appearing in any contact, any account any lead , any opportunity etc or   in any of the properties of these entities also even  in  posts,  comments ,annotations , activities , attachment names any where in dynamics sales module


If anyone knows, please let me know. 
I have come across https://learn.microsoft.com/en-us/power-apps/developer/data-platform/webapi/query-data-web-api Querying data like this but i want something global and not entity specific or property specific. 

Thanks.