Perhaps you should try some spelling variations:
"nijhoff book title 26" » "nijhoff boston title 26", "nijhoff op title 26", "nijhoff book titles 26", "nijhoff ebook title 26", "nijhoff book table 26", "nijhoff book title 2", "nijhoff book title 21", "nijhoff book title 25"
"nijhoff ework title 2006" » "nijhoff work title 2006", "nijhoff ebook title 2006", "nijhoff work titles 2006", "nijhoff ework title 20", "nijhoff ework title 2012"
"nijhoff ework title _" » "nijhoff work title _", "nijhoff ebook title _", "nijhoff work titles _"

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"nijhoff ework title 2006\") OR (((\"nijhoff book title 26\") OR (\"nijhoff ework title _\"))))".
• Removing quotes may allow a broader search: (( nijhoff ework title 2006 ) OR ((( nijhoff book title 26 ) OR ( nijhoff ework title _ )))).
• Adding a wildcard symbol may retrieve word variants: (("nijhoff ework title 2006") OR ((("nijhoff book title 26") OR ("nijhoff ework title _"))))*.