We have tried two or three subjects already without success, and what we are to talk of next I cannot imagine.

我们已经换过两三次话题，总是谈不投机，以后还要谈些什么，我实在想不出了。

youdao

I tried other sites, also without success.

我尝试了另一个网站，结果同样一无所获。

youdao

I tried when I was at school, but without success.

我在我在学校的时候尝试过，但没有成功。

youdao