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 evolution algorithm" » "modified charging solution algorithm", "modified charging evolutionary algorithm", "modified charging convolution algorithms", "modified caging evolution algorithm", "modified carbon evolution algorithm"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("modified objective optimization algorithms") OR ("modified charging evolution algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified objective optimization algorithms\") OR (\"modified charging evolution algorithm\"))".
• Removing quotes may allow a broader search: (( modified objective optimization algorithms ) OR ( modified charging evolution algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("modified objective optimization algorithms") OR ("modified charging evolution algorithm"))*.