彼が本当の理由を見つけようとしたって無駄だ。

tbd

It's no good his trying to find the true reason.

It's no use for him to try to find out the real reason.

逃げようとしたってだめだ。

tbd

It is no use trying to escape.

It's no use trying to escape.

大幅な値上げをＯＰＥＣのせいにしようとしたってそうはいかない。とても納得できないね。

tbd

You can't cop out on explaining a price increase of that size by blaming OPEC; that won't wash.