Perhaps you should try some spelling variations:
"modified df optimisation algorithmss" » "modified df optimisation algorithm", "modified df optimization algorithms", "modified df estimation algorithms", "modified _ optimisation algorithmss", "modified _ optimization algorithmss", "modified qoe optimization algorithmss", "modified adam optimisation algorithmss", "modified bi1 optimisation algorithmss"
"modified objective solution algorithm" » "modified objective evolutionary algorithm", "modified objective allocation algorithm", "modified objective evolution algorithm", "modified objective convolution 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 df optimisation algorithmss") or ("modified objective solution algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified df optimisation algorithmss") OR ("modified objective solution algorithm")).
• Removing quotes may allow a broader search: (( modified df optimisation algorithmss ) or ( modified objective solution algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("modified df optimisation algorithmss") or ("modified objective solution algorithm"))*.