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

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (("mobile learning solution algorithms") OR ("modified objective convolution algorithms"))~.
• Removing quotes may allow a broader search: (( mobile learning solution algorithms ) or ( modified objective convolution algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("mobile learning solution algorithms") or ("modified objective convolution algorithms"))*.