O, bildiğim kadarıyla, güvenilir bir arkadaştır.
- He is, so far as I know, a reliable friend.
Bildiği kadarıyla işler yolunda gidiyordu.
- So far as he was concerned, things were going well.
insofar as (or that), to the extent that, to such an extent.
... As far as we know, no Chinese trader ever met a Roman. ...
... and I've never really been genre-specific as far as what I listen to. There's always, ...