Perhaps you should try some spelling variations:
"modified parameter optimization algorithmssss" » "modified parameter optimization algorithms", "modified parameter optimisation algorithm", "modified parameters optimization algorithmssss"
"modified objective estimation algorithm" » "modified objective optimization algorithm", "modified objective allocation algorithm"

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• Performing a fuzzy search may retrieve terms with similar spellings: (("modified parameter optimization algorithmssss") OR ("modified objective estimation algorithm"))~.
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• Removing quotes may allow a broader search: (( modified parameter optimization algorithmssss ) OR ( modified objective estimation algorithm ))*.