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