cái điện thoại 
telephone [ 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)
[ điện ] : electricity, electric; palace, temple, main government building
[ thoại ] : words; version
Most Common Compounds Set 1:
Most Common Compounds Set 2 :