I'm not sure how google is able to make a dent in such an ambitious
project, but they seem to be doing it. They are scanning whole books
into a database, where you can look at significant portions of books
online. I tapped Zhuang Zi in and came up with something like 1000
hits. I selected one from the list and was shown the index, table of
contents, copyright information, and pages of text. There are also
search engines ready to look for more sources elsewhere on the web.
Like google maps, you can have a lot of fun playing with this I think.
Take a look at it and see what you think.