"đề tài" meaning in Vietnamese

{
  "etymology_templates": [
    {
      "args": {
        "1": "vi",
        "2": "題材"
      },
      "expansion": "",
      "name": "etymid"
    },
    {
      "args": {
        "1": "vi",
        "2": "Sino-Vietnamese words"
      },
      "expansion": "",
      "name": "categorize"
    },
    {
      "args": {
        "1": "題",
        "2": "subject",
        "3": "材",
        "4": ""
      },
      "expansion": "Sino-Vietnamese word from 題材, composed of 題 (“subject”) and 材",
      "name": "vi-etym-sino"
    }
  ],
  "etymology_text": "Sino-Vietnamese word from 題材, composed of 題 (“subject”) and 材.",
  "head_templates": [
    {
      "args": {
        "1": "vi",
        "2": "noun",
        "3": "",
        "4": "",
        "head": "",
        "tr": ""
      },
      "expansion": "đề tài",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "đề tài",
      "name": "vi-noun"
    }
  ],
  "lang": "Vietnamese",
  "lang_code": "vi",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "_dis": "89 11",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "90 10",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "90 10",
          "kind": "other",
          "name": "Sino-Vietnamese words",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "97 3",
          "kind": "other",
          "name": "Vietnamese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "english": "a research topic",
          "text": "đề tài nghiên cứu",
          "type": "example"
        }
      ],
      "glosses": [
        "subject, theme"
      ],
      "id": "en-đề_tài-vi-noun-e2q-rxOs",
      "links": [
        [
          "subject",
          "subject"
        ],
        [
          "theme",
          "theme"
        ]
      ]
    },
    {
      "categories": [],
      "examples": [
        {
          "english": "project with ministerial funding",
          "text": "đề tài cấp bộ",
          "type": "example"
        }
      ],
      "glosses": [
        "project"
      ],
      "id": "en-đề_tài-vi-noun-JEIQ5IQ3",
      "links": [
        [
          "project",
          "project"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ʔɗe˨˩ taːj˨˩]",
      "tags": [
        "Hà-Nội"
      ]
    },
    {
      "ipa": "[ʔɗej˦˩ taːj˦˩]",
      "tags": [
        "Huế"
      ]
    },
    {
      "ipa": "[ʔɗej˨˩ taːj˨˩]",
      "note": "Saigon"
    }
  ],
  "word": "đề tài"
}

{
  "categories": [
    "Pages with 1 entry",
    "Pages with entries",
    "Sino-Vietnamese words",
    "Vietnamese entries with incorrect language header",
    "Vietnamese lemmas",
    "Vietnamese nouns",
    "Vietnamese terms with IPA pronunciation"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "vi",
        "2": "題材"
      },
      "expansion": "",
      "name": "etymid"
    },
    {
      "args": {
        "1": "vi",
        "2": "Sino-Vietnamese words"
      },
      "expansion": "",
      "name": "categorize"
    },
    {
      "args": {
        "1": "題",
        "2": "subject",
        "3": "材",
        "4": ""
      },
      "expansion": "Sino-Vietnamese word from 題材, composed of 題 (“subject”) and 材",
      "name": "vi-etym-sino"
    }
  ],
  "etymology_text": "Sino-Vietnamese word from 題材, composed of 題 (“subject”) and 材.",
  "head_templates": [
    {
      "args": {
        "1": "vi",
        "2": "noun",
        "3": "",
        "4": "",
        "head": "",
        "tr": ""
      },
      "expansion": "đề tài",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "đề tài",
      "name": "vi-noun"
    }
  ],
  "lang": "Vietnamese",
  "lang_code": "vi",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Vietnamese terms with usage examples"
      ],
      "examples": [
        {
          "english": "a research topic",
          "text": "đề tài nghiên cứu",
          "type": "example"
        }
      ],
      "glosses": [
        "subject, theme"
      ],
      "links": [
        [
          "subject",
          "subject"
        ],
        [
          "theme",
          "theme"
        ]
      ]
    },
    {
      "categories": [
        "Vietnamese terms with usage examples"
      ],
      "examples": [
        {
          "english": "project with ministerial funding",
          "text": "đề tài cấp bộ",
          "type": "example"
        }
      ],
      "glosses": [
        "project"
      ],
      "links": [
        [
          "project",
          "project"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ʔɗe˨˩ taːj˨˩]",
      "tags": [
        "Hà-Nội"
      ]
    },
    {
      "ipa": "[ʔɗej˦˩ taːj˦˩]",
      "tags": [
        "Huế"
      ]
    },
    {
      "ipa": "[ʔɗej˨˩ taːj˨˩]",
      "note": "Saigon"
    }
  ],
  "word": "đề tài"
}