想心想肝 [－－－－]

Jyutping soeng2 sam1 soeng2 gon1
Pinyin xiǎng xīn xiǎng gān

Definitions (Wiktionary)
  1. phrase, Hokkien, Quanzhou, idiomatic
    to rack one's brains; to search everything for an answer
    (syn.) 挖空心思