Perhaps you should try some spelling variations:
"nijhoff book titles 2006" » "nijhoff boston titles 2006", "nijhoff op titles 2006", "nijhoff book entitled 2006", "nijhoff book intitled 2006"
"nijhoff app title 2" » "nijhoff op title 2", "nijhoff a title 2", "nijhoff app title a", "nijhoff app title 1"
"nijhoff ebook title _" » "nijhoff book title _"

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 2006") OR ((("nijhoff app title 2") OR ("nijhoff ebook title _")))).
• Removing quotes may allow a broader search: (( nijhoff book titles 2006 ) or ((( nijhoff app title 2 ) or ( nijhoff ebook title _ )))).
• Adding a wildcard symbol may retrieve word variants: (("nijhoff book titles 2006") or ((("nijhoff app title 2") or ("nijhoff ebook title _"))))*.