The authors have questioned how the semantic web search engines work and if the graphical display of the search results improves the retrieval. The types of queries that can be performed, as well as the main features of a semantic search engine, have been analyzed. A query was selected and executed in semantic search engines with online access to DBpedia. The basic and desirable functionality in a semantic web search engine, and reviewed studies about the evaluation of semantic search engines have been studied. Finally, there have been analyzed the graphic solutions for displaying the results of some search engines. The main findings underlines the idea that graphical solutions to display query results do not meet the expectations proposed in the bibliography.