無ない知ち恵えを絞しぼる

expression, godan verb (-ru)

rack one's brain; think hard with limited knowledge

Used when someone tries to come up with ideas or solutions despite lacking sufficient knowledge or information. Often implies a struggle to think creatively with what little one knows.

• 彼かれは無ない知ち恵えを絞しぼって、なんとか答こたえを出だそうとした。

  He racked his brain, trying to come up with an answer somehow.

• 無ない知ち恵えを絞しぼっても、いいアイデアは浮うかばなかった。

  Even though I racked my brain, no good ideas came to mind.