If you're trying to find a word or phrase in a long Word document, you'd use control f (or command f for Mac users).
Ọ bụrụ na ị na-agbalị ịchọta okwu ma ọ bụ ahịrịokwu n'ime akwụkwọ ogologo okwu, ị ga-eji akara f (ma ọ bụ iwu f maka ndị ọrụ Mac).