手しゅ段だんを尽つくす

expression, godan verb (-su)

try every possible means; leave no stone unturned

Used when someone exhausts all available methods or resources to achieve a goal. Often implies determination or desperation.

• 彼かれは問もん題だいを解かい決けつするために手しゅ段だんを尽つくした。

  He tried every possible means to solve the problem.

• 手しゅ段だんを尽つくしてもうまくいかなかった。

  Even after leaving no stone unturned, it didn't work out.