This paper analyses user's behaviour for information retrieval using existing Web search engines and a search engine focusing on trend-related queries. We are developing a search engine focusing on trend-related queries, called context search engine which we expect available in various types of domains. We guessed that users represent their information needs as series of queries based on their search intentions when they use existing search engines. This paper explains that people use the context search engine in the same way as existing search engine and says the context search engine has same elements as existing search engines.