Perhaps you should try some spelling variations:
"modified invasive convolution algorithms" » "modified invasive evolution algorithm", "modified invasive solution algorithm", "modified invasive ventilation algorithms", "modified passive convolution algorithms"
"modified quantile optimized algorithm" » "modified quantile optimized algorithms", "modified quantile optimizer algorithms", "modified adaptive optimized algorithm"

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