The phrase "also learnt that even" is correct and usable in written English.
It can be used when you want to convey that in addition to other information, you discovered something further that includes the word "even."
Example: "I also learnt that even the smallest changes can have a significant impact on the outcome."
Alternatives: "also discovered that even" or "also found out that even".
I also learnt that even though I am not an old eccentric dude who runs my company from the back of a limousine, my experience and own brand of wisdom is of value to others.
By contacting the author, we also learnt that even though the trial used a DVD that was not available, an iPhone app (in Dutch only) containing the exercises and exercise schedule was now available, as was a YouTube clip of the exercises.
But this week we've also learned that, even if Labour were to win, the prospects of anything happening would be remote because the progressive left is deeply split on this issue.
The Joint Inquiry also learned that, even after the D.C.I.'s declaration of war, there was considerable variation in the degree to which F.B.I.-organized Joint Terrorism Task Forces prioritized and coordinated efforts targeting bin Laden and Al Qaeda in the United States.
But we also learned that, even if one of those leaders (President Obama) were to concede the entire amount of that difference (i.e., rolling his revenue demands back from $1.2 trillion to $800 billion), the other leader (John Boehner) still couldn't sell it to his own team.
But I've also learned that even the most groundbreaking ideas don't get very far if the consumer doesn't come first.
She also learned that even fame has its limitations.
Yet, I've also learned that even those two layers of protection are not even enough to guarantee that even "blue-chip" companies - like, for example, AT&T -- won't break the law.
According to a 1987 interview with reporter Roger Starr of The New York Times, she learned much about pool through such activities but "she also learned that, even in fun, pool stars did not like losing in public, especially not to children, and less, even, to girl children.
In fact, yesterday we also learned that Jenkins' hasn"t even read the health reform bills being debated in Congress.
He also learned that trust builds loyalty.
