bấy giờ 
at that time, on that occasion, then [ bấy ] : (1) tender, immature, green, (2) that, that 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 :
bấy giờ at that time, on that occasion, then