Perhaps you should try some spelling variations:
"modified objective estimation algorithm" » "modified objective optimization algorithm", "modified objective allocation algorithm"
"modified multiobjective predators algorithms" » "modified multiobjective predators algorithm", "modified multiobjective predation algorithm"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified objective estimation algorithm") OR ("modified multiobjective predators algorithms"))~.
• Removing quotes may allow a broader search: (( modified objective estimation algorithm ) or ( modified multiobjective predators algorithms ))~.
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