bẩn như lợn 
dirty as a pig [ bẩn ] : (1) dirty, filthy; (2) stingy, miserly
[ như ] : like, for example, as, such as, similar
[ lợn ] : (1) pig, hog, swine; (2) to flirt
Most Common Compounds Set 1:
Most Common Compounds Set 2 :
bẩn như lợn dirty as a pig