Perhaps you should try some spelling variations:
"nijhoff ebook titles 2006" » "nijhoff book titles 2006", "nijhoff about titles 2006", "nijhoff work titles 2006", "nijhoff book titless 2006", "nijhoff ebook titless 2006", "nijhoff ebook tables 2006", "nijhoff ework titles 2006"
"nijhoff book title 1" » "nijhoff boston title 1", "nijhoff op title 1", "nijhoff book titles 1", "nijhoff book table 1", "nijhoff work title 1", "nijhoff book title _", "nijhoff book title a"
"nijhoff ebook title 2" » "nijhoff book titles 2", "nijhoff ebook titles 2", "nijhoff ebook table 2", "nijhoff ework title 2", "nijhoff ebook title _", "nijhoff ebook title a"

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 ebook titles 2006\") OR (((\"nijhoff book title 1\") OR (\"nijhoff ebook title 2\"))))".
• Removing quotes may allow a broader search: (( nijhoff ebook titles 2006 ) OR ((( nijhoff book title 1 ) OR ( nijhoff ebook title 2 )))).
• Adding a wildcard symbol may retrieve word variants: (("nijhoff ebook titles 2006") OR ((("nijhoff book title 1") OR ("nijhoff ebook title 2"))))*.