Searching using a datbase or an invisible datbase is another way to search for information on the web. Althought it does not have the information on my research topic but atleast it have all kind of information for any other topic.
To search on my diploma, i would prefer using school datbase because it have the informtion about what are the diploma is about and all other information about the course. Not that other search engine doesnt have the information about the diploma. But at least if i were to used school datbase, it will be more specific in term of what are the subject that i really want to search on.