Have a look at the Ebooks search engine. Being ever so slightly compulsive about finding sources and ideas about career development, my first search on this site was for "career". Apparently this engine makes no attempt to provide exhaustive results: this query returned only 30 items. Nor does it filter duplicates. However, I did find some attractive items.
See my first post in this series for another approach to the vexing problem of Getting Enough Stuff to Read.