Perhaps you should try some spelling variations:
"modified multiobjective optimized algorithm" » "modified multiobjective optimization algorithm", "modified multiobjective optimized algorithms", "modified multiobjective optimizer algorithms"
"machinery using pre algorithm" » "machines using pre algorithm", "machinery using mppt algorithm", "machinery using qspr algorithm", "machinery using _ algorithm", "machinery nursing pre algorithm", "machinery using one algorithm", "machinery using ph algorithm"

Try widening your search to All Fields.

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