chọc gậy bánh xe 
to throw a spanner or wrench in the works [ chọc ] : to annoy, bother, provoke
[ gậy ] : cane, stick, rod, staff
[ bánh ] : (1) cake, bread, pie, pastry; (2) wheel
[ xe ] : automobile, vehicle; to transport, take
Most Common Compounds Set 1:
Most Common Compounds Set 2 :