nghiên cứu đã thực hiện chu đáo 
the research was thoroughly carried out [ nghiên ] : (1) grind (into fine pieces), investigate, study; (2) inkstone
[ cứu ] : (1) to save, rescue, deliver, relieve; (2) to study, research, examine, investigate
[ đã ] : (past tense marker); first; after, following
[ thực ] : to grow, develop, reproduce, colonize; to eat (up); (2) true, real
[ hiện ] : (1) to appear, become visible, rise, come into sight; (2) at present
[ chu ] : see châu
[ đáo ] : to attain, reach, achieve
Most Common Compounds Set 1:
Most Common Compounds Set 2 :