Perhaps you should try some spelling variations:
"modified multiobjective approximation algorithms" » "modified multiobjective optimization algorithms"
"modified total predation algorithm" » "modified total predators algorithm", "modified total estimation algorithm", "modified thermal predation algorithm", "modified ti6al4v 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 total predation algorithm") OR ("modified multiobjective approximation algorithms"))~.
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