cho đến lúc đó 
until that moment [ cho ] : add, give; to, for; to say, claim; in order to; let, allow, permit
[ đến ] : from, beginning; to come, arrive; to, until, up to
[ lúc ] : moment, instant, time; when, at the moment that
[ đó ] : that, those, there, that
Most Common Compounds Set 1:
Most Common Compounds Set 2 :