Perhaps you should try some spelling variations:
"modified multiobjective optimization algorithms" » "modified multiobjective optimisation algorithm", "modified multiobjective estimation algorithms", "modified multiobjective estimation algorithm"
"modified notion estimation algorithmss" » "modified notion estimation algorithms", "modified notion estimation algorithm", "modified motion 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 multiobjective optimization algorithms") or ("modified notion estimation algorithmss"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified multiobjective optimization algorithms") OR ("modified notion estimation algorithmss")).
• Removing quotes may allow a broader search: (( modified multiobjective optimization algorithms ) or ( modified notion estimation algorithmss )).
• Adding a wildcard symbol may retrieve word variants: (("modified multiobjective optimization algorithms") or ("modified notion estimation algorithmss"))*.