Thanks to Mike and Dibyajyoti Sarkar , I figured out the earlier tip regarding Scribd downloader wasn’t working anymore. So googling around I found this latest one and it works fine( it didn’t work for some but mostly worked fine). So for everyone, it’s like this.
First change the UserAgent of your browser to some mobile browser(e.g. Opera Mini),
Open up scribd and find the content you want to download, look for the Download Now button. If you can’t find it, well you can’t download the content.
Hope this works for longer time.