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 search algorithm" » "machinery using source algorithm", "machines using search algorithm", "machinery using egarch algorithm", "machinery nursing research algorithm", "machinery using servo algorithm"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("machinery using search algorithm") or ("modified multiobjective optimized algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("machinery using search algorithm") OR ("modified multiobjective optimized algorithm")).
• Removing quotes may allow a broader search: (( machinery using search algorithm ) or ( modified multiobjective optimized algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("machinery using search algorithm") or ("modified multiobjective optimized algorithm"))*.