ngôn ngữ bất đồng 
speaking different languages, not having a common language [ ngôn ] : speech, word, expression; (colloquial) to speak
[ ngữ ] : (1) measure, limit, moderation; (2) despicable fellow
[ bất ] : (1) not, non-, un-; (2) type of card game
[ đồng ] : (1) unit of currency, money; coin; (2) field; (3) same, co-, fellow; (4) copper, brass
Most Common Compounds Set 1:
Most Common Compounds Set 2 :