mật báo 
to report secretly; confidential report [ mật ] : (1) honey, molasses; (2) gall, bile; (3) secret, confidential, classified; (4) dense, thick, close, intimate
[ báo ] : (1) to announce, report; (2) newspaper; (3) panther; (4) to return, give back
Most Common Compounds Set 1:
Most Common Compounds Set 2 :