не смог бы помочь

wouldn't be able to help

→ не
phrase Rare #46,504
wouldn't be able to help Used for a hypothetical inability to help. The form «смог» is masculine; other forms are used with feminine or plural subjects.
RU: Я не смог бы помочь тебе с этим.
EN: I wouldn't be able to help you with this.

Том ничем не смог бы помочь.

Tom couldn't help in any way.

Том не смог бы помочь.

Tom wouldn't have been able to help.

Я ничем не смог бы помочь.

There was nothing I could do to help.

Том не смог бы помочь Мэри.

Tom wouldn't have been able to help Mary.