Perhaps you should try some spelling variations:
"modified multiobjective optimization algorithm" » "modified multiobjective optimization algorithms", "modified multiobjective optimisation algorithm", "modified multiobjective estimation algorithm"
"code learning mom algorithm" » "how learning mom algorithm", "code learning adam algorithm", "code learning mppt algorithm", "code learning _ algorithm", "code learning from algorithm", "code learning model algorithm", "code learnings from algorithm"

Try widening your search to All Fields.

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