After the class, I tried some search engines from recommended 100 search engines. Then, I found Quintura. Quintura can search academic articles like Google Scholar, and it also has the function to show related words visually. Furthermore, we can see related words list and search results at the same time. I think Quintura is excellent in function and appearance.
I knew first about academic search engines in CM class. I have been suffering from the meaning of "polychronically" in McDaniel's article ,but I could find good article of defining it by using academic searches. I am really happy to know how to use the search tools before I write my essay.