Perhaps you should try some spelling variations:
"modified quantile estimation algorithms" » "modified quantile estimation algorithm", "modified quantile optimization algorithms", "modified quantile optimisation algorithm", "modified adaptive estimation algorithms"
"modified invasive solution algorithm" » "modified invasive evolution algorithm", "modified invasive convolution algorithms", "modified invasive evolutionary algorithm", "modified passive solution algorithm"

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified quantile estimation algorithms\") OR (\"modified invasive solution algorithm\"))~".
• Removing quotes may allow a broader search: (( modified quantile estimation algorithms ) OR ( modified invasive solution algorithm ))~.
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