Perhaps you should try some spelling variations:
"modified objective convolution algorithms" » "modified objective evolution algorithm", "modified objective solution algorithm"
"modified write estimation algorithmss" » "modified write estimation algorithms", "modified write estimation algorithm", "modified write optimization algorithms", "modified risk estimation algorithmss", "modified pose estimation algorithmss"

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• Performing a fuzzy search may retrieve terms with similar spellings: (("modified objective convolution algorithms") or ("modified write estimation algorithmss"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified objective convolution algorithms") OR ("modified write estimation algorithmss"))*.
• Removing quotes may allow a broader search: (( modified objective convolution algorithms ) or ( modified write estimation algorithmss ))*.