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    <p>There are a bunch of different open source document search engines which are made for precisely what you're trying to do. Solr, Elastic Search, Xapian, Whoosh, Haystack (made for Django) and others. There are other posts on S.O. and elsewhere that go into the benefits of using one vs another, but your requirements are simple enough that any of them will be more than fine (and easily scale with very minimal effort should your project take off, which is always nice to know). So look at their examples and see which one looks most intuitive to you - Solr is arguably the most popular and it's the only one I've worked with, but Elastic Search uses the same popular Lucene backend and is apparently much easier to get up and running, so I would start there.</p> <p>As for the actual implementation, you'll want to index each verse as a separate "document" if the single verse (or just verse number) is what you want to return. The search engine handles the ranking of the results based on relevancy (usually using a tf/idf algorithm, in case you're interested). </p> <p>The way I'd handle the italics and red text is to include some kind of markup in the text (i.e. wrap the phrase in single asterisks for italics, double asterisks for red) and then tell the analyzer to ignore those characters - there may be a simpler way in the framework you end up choosing, though, so take that with a grain of salt. The queries spanning multiple verses requirement is more complicated, but the answer will probably involve indexing each whole chapter as a document instead of (or maybe in addition to? I'd have to think about it more) each verse.</p> <p>A word of caution - if you're not familiar with search indexing, even something designed to be plug-and-play like Elastic Search will probably still require some time and effort to set up, so if you absolutely <em>need</em> to get this up and running quickly and you're already familiar with MySQL I suppose it could work (it does do fulltext search). But it's certainly not the best tool for the job, so if this is a project that you're invested in you will thank yourself later if you put in a little bit of work to learn one of these search frameworks. It may be overkill in terms of the amount of text you're dealing with, as others have pointed out, but it will be extremely flexible in how you can search on that text which seems to be what you want. For instance, adding other requirements later on would be very straightforward (for instance, you could let people limit their search to only matches in the red text). </p>
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