Perhaps you should try some spelling variations:
"modified df optimization algorithmsss" » "modified df optimization algorithms", "modified df estimation algorithms", "modified _ optimization algorithmsss", "modified qoe optimization algorithmsss", "modified _ optimisation algorithmsss", "modified adam optimization algorithmsss", "modified bi1 optimization algorithmsss"
"modified objective optimisation algorithm" » "modified objective optimization algorithm", "modified multiobjective optimization algorithm", "modified objective optimization algorithms", "modified objective estimation algorithm", "modified objective estimation algorithms"

Try widening your search to All Fields.

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