Perhaps you should try some spelling variations:
"mobile learning convolution algorithms" » "mobile learning evolution algorithm", "mobile learning solution algorithm", "machine learning convolution algorithms"
"modified objective solution algorithms" » "modified objective solution algorithm", "modified objective evolution algorithm", "modified objective estimation algorithms", "modified objective evolutionary algorithms", "modified objective allocation algorithms"

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