Greek translation of description

[isamar]

Hello,

I cannot seem to able to use Joomla language override for translation.
It does not find the keywords
I need to translate the wording description in the product section in Greek

[jjk]

Which language string (words) do you need to translate or replace?

[isamar]

I have found it thank you

[isamar]

Which language string (words) do you need to translate or replace?

The word Hello % when you log in

[isamar]

And
-> You must enter your your Billing/Shipping details first in order to be presented available shipping options for your country