Perhaps you should try some spelling variations:
"nijhoff book titles 2012" » "nijhoff boston titles 2012", "nijhoff op titles 2012", "nijhoff book entitled 2012", "nijhoff book intitled 2012", "nijhoff book titles 12"
"nijhoff ebook title 2012" » "nijhoff book title 2012", "nijhoff ebook title 21", "nijhoff ebook title 12", "nijhoff ebook title 20"
"nijhoff ebook title 26" » "nijhoff book title 26", "nijhoff ebook title 2", "nijhoff ebook title 21", "nijhoff ebook title 25"

Try widening your search to All Fields.

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 2012") OR ("nijhoff book titles 2012"))) OR ("nijhoff ebook title 26")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"nijhoff ebook title 2012\") OR (\"nijhoff book titles 2012\"))) or (\"nijhoff ebook title 26\"))".
• Removing quotes may allow a broader search: (((( nijhoff ebook title 2012 ) OR ( nijhoff book titles 2012 ))) or ( nijhoff ebook title 26 )).
• Adding a wildcard symbol may retrieve word variants: (((("nijhoff ebook title 2012") OR ("nijhoff book titles 2012"))) or ("nijhoff ebook title 26"))*.