Perhaps you should try some spelling variations:
"modified adam approximation algorithm" » "modified adam approximation algorithms", "modified _ approximation algorithm", "modified one approximation algorithm", "modified time approximation algorithm", "modified df approximation algorithm", "modified near approximation algorithm"
"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 adam approximation algorithm\") OR (\"modified invasive solution algorithm\"))~".
• Removing quotes may allow a broader search: (( modified adam approximation algorithm ) OR ( modified invasive solution algorithm ))~.
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