What does this say?

 

 

Out of control / Can't be controlled 
'Chaos' might be good for a one word headline.

Kummaiyuu .... as KhaoNiaw said, cannot control.

คุม - Control / Guard / Protect

ไม่ - Not

อยู่ - Stay / Exist / Presence / Now (common use)

 

So, as @KhaoNiaw said, "out of control".

Or, as my Thai employee says, "Cannot handle it".

 

You can see an example of it in this recent Thai news story:
คุมไม่อยู่! ชาวพิษณุโลกแห่รับเงินและของแจกแน่นวัด ไม่กลัวโควิด-19
Out of control! - Tightly-packed crowds of people in Phitsanuloke flock to receive money and donations from Temple - Unafraid of Catching Covid-19
https://ch3thailandnews.bectero.com/news/184314