Unexpected behavior of the search function

The search function is very strange in special cases:
I search for "folding" and get a lot / only hits with "holding".
I can't reduce my search to the forum "Arduino IDE 2.0 beta" either. But that's the only thing that interests me.
There is still a lot to optimize.

I can't reduce my search to the forum "Arduino IDE 2.0 beta" either. But that's the only thing that interests me.

Works for me

Thanks, now I know how sorting works.
However, the "Arduino IDE 2.0 Beta" item does not appear in the "FORUM BOARDS" drop-down list. The other three are there. How can that be explained? Am I banned from this topic?

Did you select the correct category first?

However, the "Arduino IDE 2.0 Beta" item does not appear in the "FORUM BOARDS" drop-down list.

It does if you select the Development category as in my screenshot

Please believe me: I can already follow instructions! But no entry "Arduino IDE 2.0 Beta" is visible for me!