Perhaps you should try some spelling variations:
"parameter optimisation algorithmssssssssssssss" » "parameter optimization algorithmssssssssssssss", "parameter estimation algorithmssssssssssssss", "parameter optimization algorithmsssssssssssssss", "parameter estimation algorithmsssssssssssssss"
"parameter optimisation algorithm" » "parameter optimization algorithm", "parameter estimation algorithm", "parameter optimization algorithms", "parameter estimation algorithms"

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"parameter optimisation algorithmssssssssssssss\") OR (\"parameter optimisation algorithm\"))~".
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