Perhaps you should try some spelling variations:
"nijhoff book titles" » "nijhoff boston titles", "nijhoff op titles", "nijhoff book intitled"
"nijhoff book entitled" » "nijhoff boston entitled", "nijhoff op entitled"
"nijhoff now entitled" » "nijhoff new entitled", "nijhoff law entitled", "nijhoff crown entitled", "nijhoff op entitled"

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