trong thời gian này 
during this time [ trong ] : during; in(side), among
[ thời ] : time(s), era
[ gian ] : (1) dishonest, underhanded, tricky; (2) apartment, room; (3) difficult, hard; (4) danger, peril
[ này ] : here; this, these; (expression) by the way, say
Most Common Compounds Set 1:
Most Common Compounds Set 2 :