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