Perhaps you should try some spelling variations:
"modified multiobjective estimation algorithm" » "modified multiobjective optimization algorithm"
"modified learning convolution algorithmss" » "modified learning convolution algorithms", "modified learning evolution algorithm", "mobile learning convolution algorithmss", "modified caging convolution algorithmss"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("modified learning convolution algorithmss") or ("modified multiobjective estimation algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified learning convolution algorithmss") OR ("modified multiobjective estimation algorithm")).
• Removing quotes may allow a broader search: (( modified learning convolution algorithmss ) or ( modified multiobjective estimation algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("modified learning convolution algorithmss") or ("modified multiobjective estimation algorithm"))*.