Perhaps you should try some spelling variations:
"modified notion estimation algorithms" » "modified notion estimation algorithm", "modified notion optimization algorithms", "modified notion optimisation algorithm", "modified motion estimation algorithms"
"modified thermal solution algorithm" » "modified thermal evolution algorithm", "modified thermal convolution algorithms", "modified thermal evolutionary algorithm", "modified chemical solution algorithm", "modified optimal solution algorithm", "modified minimal solution algorithm"

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