Perhaps you should try some spelling variations:
"nijhoff book titles _" » "nijhoff boston titles _", "nijhoff book entitled _", "nijhoff book intitled _"
"nijhoff ebook title 2" » "nijhoff book title 2", "nijhoff ebook title _", "nijhoff ebook title a", "nijhoff ebook title 1"
"nijhoff op title _0" » "nijhoff _ title _0", "nijhoff j title _0", "nijhoff sop title _0", "nijhoff shop title _0", "nijhoff app title _0", "nijhoff op title _", "nijhoff op title 10", "nijhoff op title 20"

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 op title _0") OR ("nijhoff ebook title 2"))) OR ("nijhoff book titles _")).
• Removing quotes may allow a broader search: (((( nijhoff op title _0 ) or ( nijhoff ebook title 2 ))) or ( nijhoff book titles _ )).
• Adding a wildcard symbol may retrieve word variants: (((("nijhoff op title _0") or ("nijhoff ebook title 2"))) or ("nijhoff book titles _"))*.