Perhaps you should try some spelling variations:
"modified seird optimisation algorithms" » "modified seird optimisation algorithm", "modified seird optimization algorithms", "modified seird estimation algorithms", "modified near optimisation algorithms"
"modified multiobjective optimization algorithm" » "modified multiobjective optimization algorithms", "modified multiobjective optimisation algorithm", "modified multiobjective estimation 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 seird optimisation algorithms") OR ("modified multiobjective optimization algorithm"))~.
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