Perhaps you should try some spelling variations:
"modified notion optimization algorithmsssss" » "modified notion optimization algorithms", "modified notion optimisation algorithm", "modified network optimization algorithmsssss", "modified policy optimization algorithmsssss", "modified allocation optimization algorithmsssss"
"modified objective allocation algorithms" » "modified objective estimation algorithms", "modified objective approximation algorithms"

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

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