Perhaps you should try some spelling variations:
"nijhoff book title 25" » "nijhoff boston title 25", "nijhoff book titles 25", "nijhoff ebook title 25", "nijhoff book table 25", "nijhoff book title 21", "nijhoff book title 5", "nijhoff book title 26", "nijhoff book title _5", "nijhoff book title a5", "nijhoff book title 15"
"nijhoff book title 15" » "nijhoff boston title 15", "nijhoff book titles 15", "nijhoff ebook title 15", "nijhoff book table 15", "nijhoff book title 1", "nijhoff book title 10", "nijhoff book title 17"
"nijhoff op title 2" » "nijhoff _ title 2", "nijhoff j title 2", "nijhoff sop title 2", "nijhoff shop title 2", "nijhoff app title 2", "nijhoff op title _", "nijhoff op title a", "nijhoff op title 1"

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 op title 2") OR ((("nijhoff book title 25") OR ("nijhoff book title 15")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"nijhoff op title 2\") or (((\"nijhoff book title 25\") OR (\"nijhoff book title 15\"))))".
• Removing quotes may allow a broader search: (( nijhoff op title 2 ) or ((( nijhoff book title 25 ) OR ( nijhoff book title 15 )))).
• Adding a wildcard symbol may retrieve word variants: (("nijhoff op title 2") or ((("nijhoff book title 25") OR ("nijhoff book title 15"))))*.