"cẩn tắc vô ưu" meaning in Vietnamese

{
  "etymology_templates": [
    {
      "args": {
        "1": "vi",
        "2": "謹則無"
      },
      "expansion": "",
      "name": "etymid"
    },
    {
      "args": {
        "1": "vi",
        "2": "Sino-Vietnamese words"
      },
      "expansion": "",
      "name": "categorize"
    },
    {
      "args": {
        "1": "謹",
        "2": "careful",
        "3": "則",
        "4": "then",
        "5": "無",
        "6": "no",
        "7": "憂",
        "8": "worry"
      },
      "expansion": "Sino-Vietnamese word from 謹 (“careful”), 則 (“then”), 無 (“no”) and 憂 (“worry”)",
      "name": "vi-etym-sino"
    }
  ],
  "etymology_text": "Sino-Vietnamese word from 謹 (“careful”), 則 (“then”), 無 (“no”) and 憂 (“worry”).",
  "head_templates": [
    {
      "args": {
        "1": "vi",
        "2": "idiom",
        "head": "",
        "tr": ""
      },
      "expansion": "cẩn tắc vô ưu",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "cẩn tắc vô ưu",
      "name": "vi-idiom"
    }
  ],
  "lang": "Vietnamese",
  "lang_code": "vi",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Sino-Vietnamese words",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Sino-Vietnamese words with uncreated Han etymology",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Vietnamese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Good watch prevents misfortune. / Better safe than sorry."
      ],
      "id": "en-cẩn_tắc_vô_ưu-vi-phrase-AKpeFxiw",
      "links": [
        [
          "Good watch prevents misfortune.",
          "good watch prevents misfortune"
        ],
        [
          "Better safe than sorry.",
          "better safe than sorry"
        ]
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[kən˧˩ tak̚˧˦ vo˧˧ ʔiw˧˧]",
      "tags": [
        "Hà-Nội"
      ]
    },
    {
      "ipa": "[kəŋ˧˨ tak̚˦˧˥ vow˧˧ ʔɨw˧˧]",
      "tags": [
        "Huế"
      ]
    },
    {
      "ipa": "[kəŋ˨˩˦ tak̚˦˥ vow˧˧ ʔɨw˧˧]",
      "note": "Saigon"
    },
    {
      "ipa": "[kəŋ˨˩˦ tak̚˦˥ jow˧˧ ʔɨw˧˧]",
      "note": "Saigon"
    }
  ],
  "word": "cẩn tắc vô ưu"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "vi",
        "2": "謹則無"
      },
      "expansion": "",
      "name": "etymid"
    },
    {
      "args": {
        "1": "vi",
        "2": "Sino-Vietnamese words"
      },
      "expansion": "",
      "name": "categorize"
    },
    {
      "args": {
        "1": "謹",
        "2": "careful",
        "3": "則",
        "4": "then",
        "5": "無",
        "6": "no",
        "7": "憂",
        "8": "worry"
      },
      "expansion": "Sino-Vietnamese word from 謹 (“careful”), 則 (“then”), 無 (“no”) and 憂 (“worry”)",
      "name": "vi-etym-sino"
    }
  ],
  "etymology_text": "Sino-Vietnamese word from 謹 (“careful”), 則 (“then”), 無 (“no”) and 憂 (“worry”).",
  "head_templates": [
    {
      "args": {
        "1": "vi",
        "2": "idiom",
        "head": "",
        "tr": ""
      },
      "expansion": "cẩn tắc vô ưu",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "cẩn tắc vô ưu",
      "name": "vi-idiom"
    }
  ],
  "lang": "Vietnamese",
  "lang_code": "vi",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Sino-Vietnamese words",
        "Sino-Vietnamese words with uncreated Han etymology",
        "Vietnamese entries with incorrect language header",
        "Vietnamese idioms",
        "Vietnamese lemmas",
        "Vietnamese terms with IPA pronunciation"
      ],
      "glosses": [
        "Good watch prevents misfortune. / Better safe than sorry."
      ],
      "links": [
        [
          "Good watch prevents misfortune.",
          "good watch prevents misfortune"
        ],
        [
          "Better safe than sorry.",
          "better safe than sorry"
        ]
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[kən˧˩ tak̚˧˦ vo˧˧ ʔiw˧˧]",
      "tags": [
        "Hà-Nội"
      ]
    },
    {
      "ipa": "[kəŋ˧˨ tak̚˦˧˥ vow˧˧ ʔɨw˧˧]",
      "tags": [
        "Huế"
      ]
    },
    {
      "ipa": "[kəŋ˨˩˦ tak̚˦˥ vow˧˧ ʔɨw˧˧]",
      "note": "Saigon"
    },
    {
      "ipa": "[kəŋ˨˩˦ tak̚˦˥ jow˧˧ ʔɨw˧˧]",
      "note": "Saigon"
    }
  ],
  "word": "cẩn tắc vô ưu"
}