How to search list

Hellow friends, when i try to type on my textbox my companion crashes

This is how my blocks look

What is the right way

What is the purpose of the ParseJson block without being interested in its result?
How many items are in list All_Items? Your logic might overwhelm your device if you type too fast…

I’m using realtime database, initial i wanted to search for title from database, so i had to set my block like this

But now i want to search for both my all items [title, date, subtitle], that’s why I’m using above blocks