Perhaps you should try some spelling variations:
ebook titles » book titles, about titles, work titles
nijhoff book » nijhoff op
boston title » button title, boston entitled, boston tables
ebook title » book titles
title 2006 » title 20, title 2012
book title » book titles, book table, work title
titles 26 » titles 2.9, titles _, titles 1
title 26 » title 2, title 21, title 25

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 ebook title 2006 ) OR ((((( nijhoff ebook title 26 ) OR ( nijhoff ebook titles 26 ))) OR ((( nijhoff book title 26 ) OR ( nijhoff boston title 26 )))))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( nijhoff ebook title 2006 ) or ((((( nijhoff ebook title 26 ) OR ( nijhoff ebook titles 26 ))) or ((( nijhoff book title 26 ) or ( nijhoff boston title 26 ))))))".
• Adding a wildcard symbol may retrieve word variants: (( nijhoff ebook title 2006 ) or ((((( nijhoff ebook title 26 ) OR ( nijhoff ebook titles 26 ))) or ((( nijhoff book title 26 ) or ( nijhoff boston title 26 ))))))*.