Perhaps you should try some spelling variations:
"modified df optimization algorithmss" » "modified df optimisation algorithm", "modified df estimation algorithms", "modified df estimation algorithm", "modified df optimisation algorithms", "modified df estimation algorithmss", "modified _ optimization algorithmss", "modified qoe optimization algorithmss", "modified _ optimisation algorithmss", "modified adam optimization algorithmss", "modified bi1 optimization algorithmss"
"modified multiobjective optimization algorithms" » "modified multiobjective optimisation algorithm", "modified multiobjective estimation algorithms", "modified multiobjective estimation algorithm"

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