Perhaps you should try some spelling variations:
"nijhoff work titles 26" » "nijhoff op titles 26", "nijhoff works titles 26", "nijhoff work title 26", "nijhoff works title 26", "nijhoff work titles 2.9", "nijhoff work titles _", "nijhoff work titles ii"
"nijhoff book titles 1" » "nijhoff boston titles 1", "nijhoff op titles 1", "nijhoff book entitled 1", "nijhoff book intitled 1", "nijhoff book tables 1", "nijhoff work titles 1", "nijhoff book times 1", "nijhoff book titles _"
"nijhoff book title 26" » "nijhoff boston title 26", "nijhoff op title 26", "nijhoff book table 26", "nijhoff work title 26", "nijhoff book time 26", "nijhoff book title 2", "nijhoff book title 21", "nijhoff book title _"
"nijhoff book title 25" » "nijhoff boston title 25", "nijhoff op title 25", "nijhoff book table 25", "nijhoff work title 25", "nijhoff book time 25", "nijhoff book title 2", "nijhoff book title 21", "nijhoff book title 5"
"nijhoff ebook title 2006" » "nijhoff ebook title 20", "nijhoff ebook title 2012", "nijhoff ebook table 2006", "nijhoff ework title 2006", "nijhoff ebook time 2006"

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 book titles 1") OR ("nijhoff work titles 26"))) OR ((("nijhoff book title 26") OR ("nijhoff book title 25"))))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"nijhoff ebook title 2006\") or (((((\"nijhoff book titles 1\") or (\"nijhoff work titles 26\"))) or (((\"nijhoff book title 26\") OR (\"nijhoff book title 25\"))))))*".
• Removing quotes may allow a broader search: (( nijhoff ebook title 2006 ) or ((((( nijhoff book titles 1 ) or ( nijhoff work titles 26 ))) or ((( nijhoff book title 26 ) OR ( nijhoff book title 25 ))))))*.