These should all render the same way, as a 'd' followed by an 'o' with a dot underneath it and an acute accent on top of it, followed by a 't'.
| dọ́t |
U+0064 LATIN SMALL LETTER D U+00F3 LATIN SMALL LETTER O WITH ACUTE U+0323 COMBINING DOT BELOW U+0074 LATIN SMALL LETTER T |
| dọ́t |
U+0064 LATIN SMALL LETTER D U+1ECD LATIN SMALL LETTER O WITH DOT BELOW U+0301 COMBINING ACUTE ACCENT U+0074 LATIN SMALL LETTER T |
| dọ́t |
U+0064 LATIN SMALL LETTER D U+006F LATIN SMALL LETTER O U+0301 COMBINING ACUTE ACCENT U+0323 COMBINING DOT BELOW U+0074 LATIN SMALL LETTER T |