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

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified objective estimation algorithmsss\") OR (\"modified parameters optimization algorithm\"))~".
• Removing quotes may allow a broader search: (( modified objective estimation algorithmsss ) OR ( modified parameters optimization algorithm ))~.
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