The document outlines various Google algorithms including Panda, Penguin, Hummingbird, Mobilegeddon, RankBrain, EMD, and BERT. These algorithms address issues such as duplicate content, keyword stuffing, poor user experience, unnatural backlinks, mobile-friendliness, and understanding user intent in search queries. Each algorithm updates and improves Google's ability to deliver relevant, high-quality search results based on user queries and content quality.
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