Perhaps you should try some spelling variations:
"modified parameter optimizer algorithmss" » "modified parameter optimizer algorithms", "modified parameter optimized algorithms", "modified parameter optimized algorithm", "modified parameter optimization algorithmss"
"modified objective approximation algorithms" » "modified objective approximation algorithm"

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• Performing a fuzzy search may retrieve terms with similar spellings: (("modified parameter optimizer algorithmss") OR ("modified objective approximation algorithms"))~.
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• Removing quotes may allow a broader search: (( modified parameter optimizer algorithmss ) OR ( modified objective approximation algorithms ))*.