能搜索到全世界的电子文档的网站

www.toodoc.com(中文译名：土豆客)，是一个电子文档搜索引擎，搜索互联网上pdf,word,txt,ppt,excel等常用文档格式。支持多语言，对中文文档支持良好。 toodoc对文档阅读者提供了贴心的在线阅读服务，使用户不用安装庞大的文档阅读程序就可以查阅这些内容。在国外，一般常用的规范的内容都会被打印成pdf 格式，在toodoc你可以找到你想要的教程，数据表格，幻灯片等等。 http://www.TooDoc.com If you have ever tried to search for books using the most common search engines, then you know that actually finding one can be tough. Thankfully, there is toodoc.com. Through this search engine, you’ll be able to search the web for PDF files, and nothing else. This allows you to type in the key words that describe the book you are looking for, and see what’s available. After you search, you’ll be presented with a listing of books and PDF files that matched your search criteria. One great thing about the site is that you can preview the files before downloading them. This allows you to see if the book you found is the one you were looking for. The preview loads really quickly and should serve as an alternative for anyone who doesn’t want to download the texts, and needs them for quick reference. Allowing to preview the files is a great feature that makes the site a lot more useful. In their own words “PDF and book search engine” Why it might be a killer PDF books are often hard to find on the web. This site makes it really easy, and since it lets you preview the books, you’ll only be downloading what you want.