Perhaps you should try some spelling variations:
approximation algorithm » approximation algorithms
evolution algorithm » solution algorithm, evolutionary algorithm, convolution algorithms
learning evolution » learning convolution, learning emotion
one approximation » time approximation, _ approximation, rough approximations
mobile learning » machine learning
modified one » modified male, modified near, modified orca

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• Performing a fuzzy search may retrieve terms with similar spellings: (( mobile learning evolution algorithm ) or ( modified one approximation algorithm ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( mobile learning evolution algorithm ) OR ( modified one approximation algorithm )).
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