Perhaps you should try some spelling variations:
"nijhoff book table 2.9" » "nijhoff op table 2.9", "nijhoff book table 2.1", "nijhoff book table 2.2", "nijhoff book table 2.5"
"nijhoff book title 20" » "nijhoff op title 20", "nijhoff work title 20", "nijhoff book entitled 20", "nijhoff book intitled 20", "nijhoff book title 2", "nijhoff book title 25", "nijhoff book title 26"
"nijhoff book title 21" » "nijhoff op title 21", "nijhoff work title 21", "nijhoff book entitled 21", "nijhoff book intitled 21", "nijhoff book title 2", "nijhoff book title _", "nijhoff book title a"
"nijhoff book time 21" » "nijhoff op time 21", "nijhoff book tips 21", "nijhoff book time 2", "nijhoff book time 25", "nijhoff book time 22"
"nijhoff book titles 10" » "nijhoff op titles 10", "nijhoff book entitled 10", "nijhoff book intitled 10", "nijhoff work titles 10", "nijhoff book entitleds 10", "nijhoff book intitleds 10", "nijhoff book titles 1", "nijhoff book titles 19", "nijhoff book titles 11"
"nijhoff boston title 10" » "nijhoff boston entitled 10", "nijhoff boston tables 10", "nijhoff boston twelve 10", "nijhoff boston title _", "nijhoff boston title a", "nijhoff boston title 2", "nijhoff boston title _0", "nijhoff boston title a0", "nijhoff boston title 20"
"nijhoff app title 2109" » "nijhoff op title 2109", "nijhoff app title 19", "nijhoff app title 29", "nijhoff a title 2109", "nijhoff app title 209", "nijhoff app title _09", "nijhoff app title a09"
"nijhoff sop title 2109" » "nijhoff op title 2109", "nijhoff sop title 19", "nijhoff sop title 29", "nijhoff shop title 2109", "nijhoff ship title 2109", "nijhoff sop title 209", "nijhoff sop title _09", "nijhoff sop title a09"
"nijhoff ebook title 10" » "nijhoff ework title 10", "nijhoff ebook entitled 10", "nijhoff ebook intitled 10", "nijhoff ebook title _", "nijhoff ebook title a", "nijhoff ebook title 2", "nijhoff ebook title _0", "nijhoff ebook title a0", "nijhoff ebook title 20"
"nijhoff ebook title 1" » "nijhoff ework title 1", "nijhoff ebook entitled 1", "nijhoff ebook intitled 1", "nijhoff ebook title _", "nijhoff ebook title a", "nijhoff ebook title 2"

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 2.9") OR ((((("nijhoff book title 20") OR ((("nijhoff book title 21") OR ("nijhoff book time 21"))))) OR ((((((("nijhoff ebook title 10") OR ("nijhoff ebook title 1"))) OR ("nijhoff book titles 10"))) OR ("nijhoff boston title 10"))))))) OR ((("nijhoff sop title 2109") OR ("nijhoff app title 2109")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"nijhoff book table 2.9\") or (((((\"nijhoff book title 20\") or (((\"nijhoff book title 21\") or (\"nijhoff book time 21\"))))) or (((((((\"nijhoff ebook title 10\") OR (\"nijhoff ebook title 1\"))) or (\"nijhoff book titles 10\"))) or (\"nijhoff boston title 10\"))))))) or (((\"nijhoff sop title 2109\") or (\"nijhoff app title 2109\"))))".
• Removing quotes may allow a broader search: (((( nijhoff book table 2.9 ) or ((((( nijhoff book title 20 ) or ((( nijhoff book title 21 ) or ( nijhoff book time 21 ))))) or ((((((( nijhoff ebook title 10 ) OR ( nijhoff ebook title 1 ))) or ( nijhoff book titles 10 ))) or ( nijhoff boston title 10 ))))))) or ((( nijhoff sop title 2109 ) or ( nijhoff app title 2109 )))).
• Adding a wildcard symbol may retrieve word variants: (((("nijhoff book table 2.9") or ((((("nijhoff book title 20") or ((("nijhoff book title 21") or ("nijhoff book time 21"))))) or ((((((("nijhoff ebook title 10") OR ("nijhoff ebook title 1"))) or ("nijhoff book titles 10"))) or ("nijhoff boston title 10"))))))) or ((("nijhoff sop title 2109") or ("nijhoff app title 2109"))))*.