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Jyutping cam4 gan1 gau3 dai2
Pinyin xún gēn jiù dǐ

Definitions (Wiktionary)
  1. phrase, idiomatic
    to get to the bottom of the matter
  2. phrase, idiomatic
    to make a thorough inquiry into something

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Jyutping cam4 gan1 gau3 dai2
Pinyin xún gēn jiū dǐ

Definitions (CC-CANTO)
  1. verb; to make a thorough investigation, to search or get to the root of thing, to inquire deeply into
Definitions (粵典–words.hk)
  1. 語句
    追求​根底​。​一般​指追問​一件​事​嘅​原由​。
    to inquire deeply into
  2. 參看
    尋根究柢
Definitions (Wiktionary)
  1. phrase, idiomatic
    to get to the bottom of the matter
  2. phrase, idiomatic
    to make a thorough inquiry into something
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)