Perhaps you should try some spelling variations:
"multiple critical analysis" » "multiple clinical analysis", "multiple cortical analysis", "multiple critics analysis", "multiple empirical analysis"
"multi statistical analysis" » "mali statistical analysis", "multiple statistical analysis", "malawi statistical analysis"

Try widening your search to All Fields.

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• If you are trying to use Boolean operators, they must be ALL CAPS: (("multi criteria analysis") OR ((("multiple critical analysis") OR ("multi statistical analysis")))).
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