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

Try widening your search to All Fields.

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

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