良い弁護士は弁護依頼人を守るために、あらゆる手をつくすだろう。

tbd

A good lawyer would leave no stone unturned in his efforts to defend his client.

我々は出来る限り手を尽くすと信じて下さい。

tbd

You may rest assured that we shall do all we can.

どう手を尽くしてもダメだった。

tbd

Every means has failed.