Perhaps you should try some spelling variations:
"nijhoff book titles 2007" » "nijhoff boston titles 2007", "nijhoff book entitled 2007", "nijhoff book intitled 2007"
"nijhoff op titles 2007" » "nijhoff _ titles 2007", "nijhoff j titles 2007", "nijhoff up titles 2007", "nijhoff comp titles 2007", "nijhoff job titles 2007"

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"nijhoff book titles 2007\") OR (\"nijhoff op titles 2007\"))".
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