Perhaps you should try some spelling variations:
"nijhoff boston entitled mr" » "nijhoff boston entituled mr", "nijhoff book entitled mr", "nijhoff boston entitled _", "nijhoff boston entitled a", "nijhoff boston entitled free"
"nijhoff book titles 2.9" » "nijhoff op titles 2.9", "nijhoff book entitled 2.9", "nijhoff book intitled 2.9", "nijhoff book titles 19", "nijhoff book titles 3.1", "nijhoff book titles 3.2"
"nijhoff ebook title 25" » "nijhoff book title 25", "nijhoff ebook title 2", "nijhoff ebook title 21", "nijhoff ebook title 5"

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 book titles 2.9") OR ("nijhoff boston entitled mr"))) OR ("nijhoff ebook title 25")).
• Removing quotes may allow a broader search: (((( nijhoff book titles 2.9 ) or ( nijhoff boston entitled mr ))) or ( nijhoff ebook title 25 )).
• Adding a wildcard symbol may retrieve word variants: (((("nijhoff book titles 2.9") or ("nijhoff boston entitled mr"))) or ("nijhoff ebook title 25"))*.