"số học" meaning in Vietnamese

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      "expansion": "",
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        "1": "數學",
        "2": "mathematics",
        "suffix": "học"
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      "expansion": "Sino-Vietnamese word from 數學 (“mathematics”)",
      "name": "vi-etym-sino"
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  "etymology_text": "Sino-Vietnamese word from 數學 (“mathematics”). Compare toán học (“mathematics”).",
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      "expansion": "số học",
      "name": "head"
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      "args": {},
      "expansion": "số học",
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  ],
  "lang": "Vietnamese",
  "lang_code": "vi",
  "pos": "noun",
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          "parents": [],
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        },
        {
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          "langcode": "vi",
          "name": "Arithmetic",
          "orig": "vi:Arithmetic",
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            "Mathematics",
            "Sciences",
            "Formal sciences",
            "All topics",
            "Fundamental"
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          "source": "w"
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      ],
      "derived": [
        {
          "alt": "神數學",
          "word": "thần số học"
        }
      ],
      "glosses": [
        "arithmetic"
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      "id": "en-số_học-vi-noun-ynXq9OAM",
      "links": [
        [
          "arithmetic",
          "arithmetic#English"
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  ],
  "sounds": [
    {
      "ipa": "[so˧˦ hawk͡p̚˧˨ʔ]",
      "tags": [
        "Hà-Nội"
      ]
    },
    {
      "ipa": "[ʂow˨˩˦ hawk͡p̚˨˩ʔ]",
      "tags": [
        "Huế"
      ]
    },
    {
      "ipa": "[sow˨˩˦ hawk͡p̚˨˩ʔ]",
      "tags": [
        "Huế"
      ]
    },
    {
      "ipa": "[ʂow˦˥ hawk͡p̚˨˩˨]",
      "note": "Saigon"
    },
    {
      "ipa": "[sow˦˥ hawk͡p̚˨˩˨]",
      "note": "Saigon"
    },
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  ],
  "word": "số học"
}

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  "derived": [
    {
      "alt": "神數學",
      "word": "thần số học"
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  ],
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      "expansion": "số học",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "số học",
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  "pos": "noun",
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          "arithmetic#English"
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  ],
  "sounds": [
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      "ipa": "[so˧˦ hawk͡p̚˧˨ʔ]",
      "tags": [
        "Hà-Nội"
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    },
    {
      "ipa": "[ʂow˨˩˦ hawk͡p̚˨˩ʔ]",
      "tags": [
        "Huế"
      ]
    },
    {
      "ipa": "[sow˨˩˦ hawk͡p̚˨˩ʔ]",
      "tags": [
        "Huế"
      ]
    },
    {
      "ipa": "[ʂow˦˥ hawk͡p̚˨˩˨]",
      "note": "Saigon"
    },
    {
      "ipa": "[sow˦˥ hawk͡p̚˨˩˨]",
      "note": "Saigon"
    },
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    }
  ],
  "word": "số học"
}