Ive been working on the same subject (search with keywords) for a while and this how I did it.
Take a look at MySQL fulltext searches, if you must use MySQL. Otherwise take a look at SOLR, which is a fulltext search engine. You can use MySQL and SOLR in combination to provide enterprise level search capabilities for your apps.
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.