The word "搜寻" is formed by combining two characters with closely related meanings to create a more specific and forceful concept. The first character, "搜", carries the sense of a thorough, probing, or systematic search, like combing through an area. The second character, "寻", means to look for or seek something, often with intent. By joining them, the word emphasizes not just the act of looking ("寻"), but doing so in a methodical, sweeping, and investigative manner ("搜"), resulting in a term that conveys a comprehensive search or hunt.