kỷ nguyên 
era, age, period, epoch [ kỷ ] : (1) order, discipline; (2) small table, bench; (3) self; (4) to write, record; (5) cycle, era; (6) 6th cycle of the twelve years of the Chinese zodiac
[ nguyên ] : acting, holding a post temporarily; to be intact, unaltered, brand new, original; in full; all, whole, entire
Most Common Compounds Set 1:
Most Common Compounds Set 2 :
kỷ nguyên của thông tin information age lập một kỷ nguyên mới to make a new epoch