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