My Search isn't working, it only works when I typed “Warrior Cats” but everything else don't work,

Scratch's search engine is currently broken, and all we can do is wait for it to be fixed.
Unfortunately, no one knows when this will be fixed or how to fix it.
This affects everyone on Scratch, so the Scratch Team is aware of the situation.

For now, you can type "site:scratch.mit.edu (search query)" into a search engine like Google to work around this bug.
You should also discuss the bug here: https://scratch.mit.edu/discuss/topic/790866/

This also affects the Explore page, since that's internally based on Scratch's search engine.

It’s currently broken, there’s no way to search as of now.

To make it easier for engineers to debug, let's try to keep the talk in in one spot: https://scratch.mit.edu/discuss/topic/790866/