Perhaps you should try some spelling variations:
"modified df estimation algorithmss" » "modified df estimation algorithms", "modified df estimation algorithm", "modified df optimization algorithms", "modified _ estimation algorithmss", "modified adam estimation algorithmss", "modified bi1 estimation algorithmss"
"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.

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