This document discusses how to think like a search engine when formulating search queries. It explains that search engines take into account various factors of context like previous searches, visited sites, location and device type. Queries can have different intents like being transactional to "do" something, informational to "know" something or navigational to "go" somewhere. Effective queries start with context-relevant synonyms and satisfy the searcher's intent. Search engines also analyze entities, relationships and understand context and intent to improve search over time through algorithm updates.