Perhaps you should try some spelling variations:
"modified multiobjective optimization algorithm" » "modified multiobjective optimization algorithms", "modified multiobjective optimisation algorithm", "modified multiobjective estimation algorithm"
"modified charging optimized algorithm" » "modified charging optimized algorithms", "modified charging optimizer algorithms", "modified choosing optimizer algorithm", "modified caging optimized algorithm", "modified carbon optimized 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 charging optimized algorithm") OR ("modified multiobjective optimization algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified charging optimized algorithm\") OR (\"modified multiobjective optimization algorithm\"))*".
• Removing quotes may allow a broader search: (( modified charging optimized algorithm ) OR ( modified multiobjective optimization algorithm ))*.