1 (wiktionary) 2 (vi.wikipedia) 3 (en.wikipedia) 4 (glosbe)

Core Words Familarize yourself with the 'core words'.
Etymology Explore the origin of the 'core words'.
Wordsense Learn about the wordsenses of the english term.

COMPOUNDS

dưỡng khí oxygen
dưỡng khí nguyên chất pure oxygen
dưỡng khí ròng pure oxygen
ô xi oxygen
ô-xi oxygen