Perhaps you should try some spelling variations:
"nijhoff ebook title 2006" » "nijhoff book title 2006", "nijhoff book titles 2006", "nijhoff ebook title 20", "nijhoff ebook title 2012", "nijhoff ebook title a006", "nijhoff ebook title 1006"
"nijhoff ebook title 26" » "nijhoff book title 26", "nijhoff book titles 26", "nijhoff ebook title 21", "nijhoff ebook title 25", "nijhoff ebook title a", "nijhoff ebook title a6", "nijhoff ebook title 16"
"nijhoff ebook title _" » "nijhoff book title _", "nijhoff book titles _"
"nijhoff ebook title 2" » "nijhoff book title 2", "nijhoff book titles 2", "nijhoff ebook title a", "nijhoff ebook title 1"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nijhoff ebook title 2006") OR ("nijhoff ebook title 26"))) OR ((("nijhoff ebook title _") OR ("nijhoff ebook title 2"))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"nijhoff ebook title 2006\") OR (\"nijhoff ebook title 26\"))) or (((\"nijhoff ebook title _\") or (\"nijhoff ebook title 2\"))))*".
• Removing quotes may allow a broader search: (((( nijhoff ebook title 2006 ) OR ( nijhoff ebook title 26 ))) or ((( nijhoff ebook title _ ) or ( nijhoff ebook title 2 ))))*.