Existing Web search systems have the following problems. They cannot show Web contents that are related to the keywords but do not match to them. And the relationship between contents is unknown. This makes continuous navigation between contents through keywords impossible. The purpose of this study is to solve these problems, as examined in terms of visualization of the search results and of the strengths of relationships between Web contents. The paper proposes some visualization models, it also describes the development of a Web search system. The system has the following functions: (1) reference based on the strengths of relationships between Web contents; (2) visualization of the relationships among Web contents; (3) continuous navigation between Web contents through characteristic keywords. By using the system, users can navigate on Web pages from different viewpoints.