1 (wiktionary) 2 (vi.wikipedia) 3 (en.wikipedia) 4 (glosbe)
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Etymology Explore the origin of the 'core words'.
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COMPOUNDS
Long Biên 
the ancient name of Hanoi
Long Vương River God
cam kết long trọng solemn promise, pledge
long bong sound of rapid running water
long bào imperial mantle, imperial robe
long cung dragon’s palace
long cổn imperial robe, royal tunic
long diên hương ambergris
long diện the Emperor’s face
long giá imperial carriage, imperial coach
long lanh sparkling, glistening
long lỏng fluid, loose, runny
long mi eyelashes
long mạch favorable geomantic features, good layer of earth
long nhan dragon countenance, the emperor’s countenance
long nhong jingling
long nhãn longan
long não camphor
long phụng dragon and phoenix
long sàng imperial bed, king’s bed
long sòng sọc (of eyes) flashing with rage
long thể the person of the emperor
long thịnh prosperous, wealthy
long tong run about; drip-drop, dripping sound
long trọng festive and solemn, formal
long trời lở đất earthshaking
long tu seaweed
long vân happy occasion
long vương dragon king (king of river or ocean)
long xa imperial carriage, imperial coach
long đong to have a hard time, hard, unlucky
long đình imperial court, imperial palace
trời long đất lở come hell or high water
áo long bào imperial robe
Long Biên the ancient name of Hanoi Long Vương River God cam kết long trọng solemn promise, pledge long bong sound of rapid running water long bào imperial mantle, imperial robe long cung dragon’s palace long cổn imperial robe, royal tunic long diên hương ambergris long diện the Emperor’s face long giá imperial carriage, imperial coach long lanh sparkling, glistening long lỏng fluid, loose, runny long mi eyelashes long mạch favorable geomantic features, good layer of earth long nhan dragon countenance, the emperor’s countenance long nhong jingling long nhãn longan long não camphor long phụng dragon and phoenix long sàng imperial bed, king’s bed long sòng sọc (of eyes) flashing with rage long thể the person of the emperor long thịnh prosperous, wealthy long tong run about; drip-drop, dripping sound long trọng festive and solemn, formal long trời lở đất earthshaking long tu seaweed long vân happy occasion long vương dragon king (king of river or ocean) long xa imperial carriage, imperial coach long đong to have a hard time, hard, unlucky long đình imperial court, imperial palace trời long đất lở come hell or high water áo long bào imperial robe