Perhaps you should try some spelling variations:
nijhoff book » nijhoff boston, nijhoff op
ebook title » book titles
book title » book titles, book table, work title
title 26 » title 2, title 21, title 25

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 book title 26 ) OR ( nijhoff ebook title 26 ))".
• Adding a wildcard symbol may retrieve word variants: (( nijhoff book title 26 ) OR ( nijhoff ebook title 26 ))*.