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