vì lý do tiết kiệm 
for economic reasons [ vì ] : since, for, because of, due to, since
[ lý ] : physics; reason, principle, law
[ do ] : because of, caused by, due to; derived from; on; by (a person); to derive from, cause
[ tiết ] : to flow (out), leak
[ kiệm ] : thrifty
Most Common Compounds Set 1:
Most Common Compounds Set 2 :