Keyword based information retrieval (IR) has became prevalent in our daily searching. Mainstream tools and technologies are being developed to index and retrieve information given bag of words only, dropping structured information as mathematical formulae or narrative structure of documents alltogether. On the example of math-aware (tree indexing) information retrieval (MIR) we will demonstrate an approach that has been recently evaluated for MIR as best amongst available prototypes. We discuss our approaches and results achieved in Wikipedia subtask at NTCIR-11. We outline possible approaches towards IR that is even meaningful.