biết hết mọi thứ về 
to know everything about sth [ biết ] : to know, know how to do (something) be aware of
[ hết ] : finished, exhausted, finish, exhaust; completely, totally, all, of all, everything
[ mọi ] : all, every
[ thứ ] : (1) (ordinalizer); order, type, suit, kind; (2) thing, item
[ về ] : (1) about, concerning, regarding; (2) in, towards; (3) to come back, return, go
Most Common Compounds Set 1:
Most Common Compounds Set 2 :