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 job titles 2006" » "nijhoff j titles 2006", "nijhoff op titles 2006"

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 job titles 2006")).
• Removing quotes may allow a broader search: (( nijhoff book titles 2006 ) or ( nijhoff job titles 2006 )).
• Adding a wildcard symbol may retrieve word variants: (("nijhoff book titles 2006") or ("nijhoff job titles 2006"))*.