mãi đến bây giờ 
only now, never before [ mãi ] : (for) a long time, always for ever, for good, unceasingly, continually; to continue, go on
[ đến ] : from, beginning; to come, arrive; to, until, up to
[ bây ] : (1) shameless, brazen; (2) this, this extent
[ giờ ] : time (of the clock), hour, o’clock; now is the time (for sth)
Most Common Compounds Set 1:
Most Common Compounds Set 2 :