Perhaps you should try some spelling variations:
"modified objective convolution algorithms" » "modified objective evolution algorithm", "modified objective solution algorithm"
"modified based predation algorithm" » "modified based predators algorithm", "modified based estimation algorithm", "modified based prediction algorithm", "modified based gradation algorithm", "modified male predation 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: (("modified based predation algorithm") OR ("modified objective convolution algorithms"))~.
• Removing quotes may allow a broader search: (( modified based predation algorithm ) or ( modified objective convolution algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified based predation algorithm") or ("modified objective convolution algorithms"))*.