có tin cho biết 
there are reports [ có ] : to be, have, exist; there is, there are
[ tin ] : news, report; to believe, trust
[ cho ] : add, give; to, for; to say, claim; in order to; let, allow, permit
[ biết ] : to know, know how to do (something) be aware of
Most Common Compounds Set 1:
Most Common Compounds Set 2 :