Perhaps you should try some spelling variations:
"nijhoff boston entitled" » "nijhoff boston entituled"
"nijhoff book entitled" » "nijhoff op entitled"
"nijhoff job titles" » "nijhoff j titles", "nijhoff op titles", "nijhoff job 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 job titles") OR ((("nijhoff book entitled") OR ("nijhoff boston entitled")))).
• Removing quotes may allow a broader search: (( nijhoff job titles ) or ((( nijhoff book entitled ) or ( nijhoff boston entitled )))).
• Adding a wildcard symbol may retrieve word variants: (("nijhoff job titles") or ((("nijhoff book entitled") or ("nijhoff boston entitled"))))*.