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Slides of my 'Haystack - The search relevance conference' talk about query relaxation. The first part gives a brief overview on strategies to help users out of zero search results situations. The second part focuses on query relaxation. I compare several algorithms that try to find the best term to be dropped from a multi-term zero-results query in order to produce results. The best solutions uses a multi-layer neural network with Word2vec as inputs to find this term.