Perhaps you should try some spelling variations:
"modified multiobjective optimization algorithm" » "modified multiobjective optimization algorithms", "modified multiobjective optimisation algorithm", "modified multiobjective estimation algorithm"
"powder using search algorithm" » "powder using source algorithm", "code using search algorithm", "boiler using search algorithm", "model using search algorithm", "powder using egarch algorithm", "powder nursing research algorithm", "powder using servo algorithm"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("powder using search algorithm") or ("modified multiobjective optimization algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("powder using search algorithm") OR ("modified multiobjective optimization algorithm")).
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