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With text indexes, you get also not just search for words but you can also rule out words,

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let me show you what I mean. If I would search for awesome

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and I pretty print that,

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we find both the book and the T-shirt.

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Now let's say I only want to find awesome products which are not T-shirts, so I could do this by adding

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awesome and then minus T-shirt. If I do this I only find the book because the minus in front of a word

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means that this word should be excluded

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and this is really helpful of course because it allows you to run narrowed down queries like this one

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where you only find awesome products which are not T-shirts or which at least don't have T-shirt in

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the title or in the description.