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

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 convolution algorithm") OR ("modified objective convolution algorithmsssssss"))~.
• Removing quotes may allow a broader search: (( mobile learning convolution algorithm ) or ( modified objective convolution algorithmsssssss ))~.
• Adding a wildcard symbol may retrieve word variants: (("mobile learning convolution algorithm") or ("modified objective convolution algorithmsssssss"))*.