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