Perhaps you should try some spelling variations:
"nijhoff book intitled 21" » "nijhoff book intituled 21", "nijhoff book entitled 21", "nijhoff op intitled 21", "nijhoff book intitled 1", "nijhoff book intitled _", "nijhoff book intitled a"
"nijhoff boston titles 21" » "nijhoff boston tables 21", "nijhoff boston times 21", "nijhoff boston entitled 21", "nijhoff boston titles 1", "nijhoff boston titles 11", "nijhoff boston titles 71"
"nijhoff book title 26" » "nijhoff op title 26", "nijhoff book titles 26", "nijhoff book table 26", "nijhoff work title 26", "nijhoff book title 2", "nijhoff book title 21", "nijhoff book title 25"
"nijhoff ebook title 2006" » "nijhoff book titles 2006", "nijhoff ebook title 20", "nijhoff ebook title 2012", "nijhoff ebook titles 2006", "nijhoff ebook table 2006", "nijhoff ework title 2006"

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 ebook title 2006") OR ((((("nijhoff book intitled 21") OR ("nijhoff boston titles 21"))) OR ("nijhoff book title 26")))).
• Removing quotes may allow a broader search: (( nijhoff ebook title 2006 ) or ((((( nijhoff book intitled 21 ) or ( nijhoff boston titles 21 ))) or ( nijhoff book title 26 )))).
• Adding a wildcard symbol may retrieve word variants: (("nijhoff ebook title 2006") or ((((("nijhoff book intitled 21") or ("nijhoff boston titles 21"))) or ("nijhoff book title 26"))))*.