Perhaps you should try some spelling variations:
"nijhoff boston title 10" » "nijhoff boston entitled 10", "nijhoff boston tables 10", "nijhoff boston twelve 10", "nijhoff boston title 1", "nijhoff boston title _", "nijhoff boston title a"
"nijhoff sup titles 2109" » "nijhoff sup titles 19", "nijhoff sup titles 2.9", "nijhoff up titles 2109", "nijhoff our titles 2109", "nijhoff issue titles 2109"
"nijhoff book titles 10" » "nijhoff book entitled 10", "nijhoff book intitled 10", "nijhoff ebook titles 10", "nijhoff work titles 10", "nijhoff book times 10", "nijhoff book titles 1", "nijhoff book titles 19", "nijhoff book titles 11"
"nijhoff op title 10" » "nijhoff _ title 10", "nijhoff j title 10", "nijhoff sop title 10", "nijhoff shop title 10", "nijhoff up titles 10", "nijhoff op title 1", "nijhoff op title _", "nijhoff op title a"
"nijhoff book table 2009" » "nijhoff book table 20", "nijhoff book table 2.9", "nijhoff book table 29"
"nijhoff book title 20" » "nijhoff ebook title 20", "nijhoff work title 20", "nijhoff book time 20", "nijhoff book title 2", "nijhoff book title 25", "nijhoff book title 26"
"nijhoff book title 21" » "nijhoff ebook title 21", "nijhoff work title 21", "nijhoff book time 21", "nijhoff book title 1", "nijhoff book title 2", "nijhoff book title _"
"nijhoff app title 2109" » "nijhoff app title 19", "nijhoff app title 29", "nijhoff a title 2109", "nijhoff app title 109", "nijhoff app title 209", "nijhoff app title _09"

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 table 2009") OR ((((("nijhoff book title 20") OR ("nijhoff book title 21"))) OR ((((("nijhoff op title 10") OR ("nijhoff book titles 10"))) OR ("nijhoff boston title 10"))))))) OR ((("nijhoff sup titles 2109") OR ("nijhoff app title 2109")))).
• Removing quotes may allow a broader search: (((( nijhoff book table 2009 ) or ((((( nijhoff book title 20 ) or ( nijhoff book title 21 ))) or ((((( nijhoff op title 10 ) or ( nijhoff book titles 10 ))) or ( nijhoff boston title 10 ))))))) or ((( nijhoff sup titles 2109 ) or ( nijhoff app title 2109 )))).
• Adding a wildcard symbol may retrieve word variants: (((("nijhoff book table 2009") or ((((("nijhoff book title 20") or ("nijhoff book title 21"))) or ((((("nijhoff op title 10") or ("nijhoff book titles 10"))) or ("nijhoff boston title 10"))))))) or ((("nijhoff sup titles 2109") or ("nijhoff app title 2109"))))*.