Perhaps you should try some spelling variations:
"nijhoff boston entituled 2007" » "nijhoff book entituled 2007", "nijhoff sermon entituled 2007"
"nijhoff op titles 2007" » "nijhoff _ titles 2007", "nijhoff j titles 2007", "nijhoff up titles 2007", "nijhoff comp titles 2007", "nijhoff job titles 2007"

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 boston entituled 2007") OR ("nijhoff op titles 2007")).
• Removing quotes may allow a broader search: (( nijhoff boston entituled 2007 ) or ( nijhoff op titles 2007 )).
• Adding a wildcard symbol may retrieve word variants: (("nijhoff boston entituled 2007") or ("nijhoff op titles 2007"))*.