Perhaps you should try some spelling variations:
"nijhoff book title _0" » "nijhoff boston title _0", "nijhoff op title _0", "nijhoff book table _0", "nijhoff work title _0", "nijhoff book time _0", "nijhoff book title _", "nijhoff book title 10", "nijhoff book title 20"
"nijhoff book titles 21" » "nijhoff boston titles 21", "nijhoff op titles 21", "nijhoff book entitled 21", "nijhoff book intitled 21", "nijhoff book tables 21", "nijhoff work titles 21", "nijhoff book times 21", "nijhoff book titles 1", "nijhoff book titles 11", "nijhoff book titles 71"
"nijhoff ebook title 2" » "nijhoff ebook table 2", "nijhoff ework title 2", "nijhoff ebook time 2", "nijhoff ebook title _", "nijhoff ebook title a", "nijhoff ebook 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 book title _0") OR ("nijhoff ebook title 2"))) OR ("nijhoff book titles 21")).
• Removing quotes may allow a broader search: (((( nijhoff book title _0 ) or ( nijhoff ebook title 2 ))) or ( nijhoff book titles 21 )).
• Adding a wildcard symbol may retrieve word variants: (((("nijhoff book title _0") or ("nijhoff ebook title 2"))) or ("nijhoff book titles 21"))*.