Perhaps you should try some spelling variations:
"modified objective optimization algorithmss" » "modified objective optimization algorithms", "modified objective optimisation algorithm", "modified objective estimation algorithms", "modified multiobjective optimization algorithmss"
"modified adaptive quantization algorithm" » "modified adaptive estimation algorithm", "modified adaptive ventilation algorithm", "modified passive quantization algorithm"

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• Performing a fuzzy search may retrieve terms with similar spellings: (("modified objective optimization algorithmss") OR ("modified adaptive quantization algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified objective optimization algorithmss\") OR (\"modified adaptive quantization algorithm\"))*".
• Removing quotes may allow a broader search: (( modified objective optimization algorithmss ) OR ( modified adaptive quantization algorithm ))*.