Perhaps you should try some spelling variations:
"modified charging optimizer algorithms" » "modified charging optimized algorithms", "modified charging optimized algorithm", "modified charging optimization algorithms", "modified choosing optimizer algorithms", "modified caging optimizer algorithms", "modified carbon optimizer algorithms"
"modified notion approximation algorithms" » "modified network approximation algorithms", "modified time approximation algorithms", "modified one approximation algorithms"

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 optimizer algorithms") or ("modified notion approximation algorithms"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified charging optimizer algorithms") OR ("modified notion approximation algorithms")).
• Removing quotes may allow a broader search: (( modified charging optimizer algorithms ) or ( modified notion approximation algorithms )).
• Adding a wildcard symbol may retrieve word variants: (("modified charging optimizer algorithms") or ("modified notion approximation algorithms"))*.