thanh cái 
bus bar [ thanh ] : sound, noise, tone, pitch
[ cái ] : (1) [CL for most inanimate objects, isolated events]; (2) object, thing; (3) female; (4) main, principle; (5) solid substances in soup (as opposed to nước, the liquid, broth)
Most Common Compounds Set 1:
Most Common Compounds Set 2 :