I guess one way would be to allow the use of script tag, but that is not a good idea. The other option is to write a small block plugin for the google search. It is not a big job, if you take some existing block plugin as the starting point.
Hello Ajnyga,
I have examined developedBy and some other block plugin, but unfortunately it is impossible job for me to write a google search plugin. I have no programmer skill, didn’t understand anything. Is there any way I can copy or replace?