Perhaps you should try some spelling variations:
"nijhoff ebook title a" » "nijhoff book title a", "nijhoff book titles a"
"nijhoff ebook title _" » "nijhoff book title _", "nijhoff book titles _"
"nijhoff ebook title 25" » "nijhoff book title 25", "nijhoff book titles 25", "nijhoff ebook title 2", "nijhoff ebook title 21", "nijhoff ebook title 5"

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 a") OR ("nijhoff ebook title _"))) OR ("nijhoff ebook title 25")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"nijhoff ebook title a\") OR (\"nijhoff ebook title _\"))) or (\"nijhoff ebook title 25\"))".
• Removing quotes may allow a broader search: (((( nijhoff ebook title a ) OR ( nijhoff ebook title _ ))) or ( nijhoff ebook title 25 )).
• Adding a wildcard symbol may retrieve word variants: (((("nijhoff ebook title a") OR ("nijhoff ebook title _"))) or ("nijhoff ebook title 25"))*.