vụ lộn xộn 
confusion, disorder, chaos [ vụ ] : [CL for accidents, disasters]; business, duty, affair; case (of)
[ lộn ] : to confuse, mix up; wrong
[ xộn ] : big, large, bulky
Most Common Compounds Set 1:
Most Common Compounds Set 2 :
vụ lộn xộn confusion, disorder, chaos