How to make dynamic string identifier

Hi,

I am new to Arduino and C, and I am struck on a problem that seemed to be simpe to me, but it gets as difficult as I struggle to find the solution:

I am trying to find a simple and dynamic code that can be used to tell if an unknown sting contains a particular piece of text, just like it is in Google Assistant, or Cortana...

Any help would be Appreciated :sweat_smile:

Here is a reference for the string.h (cstring functions) that include the string search functions.

groundFungus:
Here is a reference for the string.h (cstring functions) that include the string search functions.

Thanks A Ton!!!