Perhaps you should try some spelling variations:
solution algorithm » evolution algorithm, convolution algorithms, evolutionary algorithm
passive estimation » pose estimation
modified learning » mobile learning, modified caging
learning solution » learning convolution, learning emotion
modified passive » modified adaptive

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