Perhaps you should try some spelling variations:
"nijhoff book entitled 2006" » "nijhoff book untitled 2001", "nijhoff book entitled 10", "nijhoff book entitled 60", "nijhoff boston entitled 2006"
"nijhoff book intitled 2006" » "nijhoff book intituled 2006", "nijhoff book untitled 2001", "nijhoff boston intitled 2006"
"nijhoff op intitled 2006" » "nijhoff op untitled 2001", "nijhoff one intitled 2006", "nijhoff foe intitled 2006", "nijhoff _ intitled 2006", "nijhoff j intitled 2006"
"nijhoff book titles 2006" » "nijhoff boston 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 book entitled 2006"))) OR ((("nijhoff book intitled 2006") OR ("nijhoff op intitled 2006")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"nijhoff book titles 2006\") OR (\"nijhoff book entitled 2006\"))) or (((\"nijhoff book intitled 2006\") or (\"nijhoff op intitled 2006\"))))".
• Removing quotes may allow a broader search: (((( nijhoff book titles 2006 ) OR ( nijhoff book entitled 2006 ))) or ((( nijhoff book intitled 2006 ) or ( nijhoff op intitled 2006 )))).
• Adding a wildcard symbol may retrieve word variants: (((("nijhoff book titles 2006") OR ("nijhoff book entitled 2006"))) or ((("nijhoff book intitled 2006") or ("nijhoff op intitled 2006"))))*.