As alas I could not manage to use a PositionFilter right like Jayendra Patil suggested (PositionFilter makes any query a OR boolean query), I used a different approach.
Exact phrase search does not work because of query slop parameter = 0 by default. Searching for a phrase '"Hello World"' it searches for terms with sequential positions. I wish EdgeNGramFilter had a parameter to control output positioning, this looks like an old question.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.