"I do not find the knife."
Translation:Non trovo il coltello.
I understand this is the literal translation, but this be used in the same way we would say "I can't find the knife?"
Exactly. Expressing the inability to achieve a goal can be done in Italian without using potere, to be able to/can:
- I can't do it/Non ce la faccio
- We can't hear you/Non ti sentiamo
- He can't see you/Lui non ti vede