trong không gian 
in (outer) space [ trong ] : during; in(side), among
[ không ] : (1) no, not; (question tag); (2) air; (3) empty
[ gian ] : (1) dishonest, underhanded, tricky; (2) apartment, room; (3) difficult, hard; (4) danger, peril
Most Common Compounds Set 1:
Most Common Compounds Set 2 :