Perhaps you should try some spelling variations:
"modified objective optimization algorithms" » "modified objective optimisation algorithm", "modified objective estimation algorithms", "modified objective estimation algorithm", "modified multiobjective optimization algorithms"
"modified charging estimation algorithmss" » "modified charging estimation algorithms", "modified charging estimation algorithm", "modified charging station algorithmss", "modified caging estimation algorithmss", "modified carbon estimation algorithmss"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("modified charging estimation algorithmss") OR ("modified objective optimization algorithms"))~.
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