Google Site search function in embedded smartsheet
I have a google site where I embed different smartsheets on different pages. So, in gSite page 1 I embed smartsheet 1, in page 2 I embed smartsheet 2 and so on. The google site offers me a search function that allows me to find words in the different gSite pages, but this search function cannot search inside the content of the embedded smartsheets.
Is there a way that the google site search function also searches into the embedded smartsheets?
Is there any plug-in/extension that I would need to install to allow such functionality?
As I can embed them as iFRAMEs, is there a way to add some code on the iFRAME that I'm linking to allow me to access the gSite search functionality?
Any feedback or idea about that it will be highly appreciated!