Queries
How Search Engines Understand What You Type
Query processing transforms typed or spoken user search terms into structured conceptual intent. Search engines clean and normalize tokens, expand synonyms, correct misspellings, detect named entities, and classify intent into informational, navigational, commercial, or transactional categories before requesting matching document lists from the inverted index.
Articles in this guide
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Query processing: from typed words to results
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Query parsing and normalization
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Query expansion and synonym handling
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Query fan-out in AI search
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Search intent: the four types explained
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Informational vs navigational vs transactional vs commercial
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How to identify search intent from a SERP
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Long-tail keywords explained
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Zero-volume keywords: are they worth targeting
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Voice search queries: how they differ
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Google search operators: the complete list
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Boolean search explained
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How Google Autocomplete works
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People Also Ask: how it is generated
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Related searches and how to use them
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Spelling correction in search engines
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Entities explained: how search engines think in things not strings
- Coming soon
The Google Knowledge Graph
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Named entity recognition in search
- Coming soon
Knowledge panels: how to earn one