Perhaps you should try some spelling variations:
"modified multiobjective estimation algorithms" » "modified multiobjective optimization algorithms", "modified multiobjective estimation algorithm", "modified multiobjective optimisation algorithm"
"modified adam estimation algorithmss" » "modified adam estimation algorithm", "modified adam optimization algorithms", "modified adam estimation algorithms", "modified adam optimization algorithmss", "modified adam optimisation algorithms", "modified df estimation algorithmss", "modified near estimation algorithmss"

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