возможно он и не знал обо всем, но

возможно он и не знал обо всем, но не показывал вида

Результаты (английский) 1:

Perhaps he didn't know about everything, but didn't show the type

Результаты (английский) 2:

maybe he did not know everything, but did not show the form

Результаты (английский) 3:

he might not know everything, but not cold