Perhaps you should try some spelling variations:
"modified df optimisation algorithm" » "modified df optimization algorithms", "modified df estimation algorithm", "modified df estimation algorithms", "modified _ optimisation algorithm", "modified _ optimization algorithm", "modified qoe optimization algorithm", "modified adam optimisation algorithm", "modified bi1 optimisation algorithm"
"modified quantile approximation algorithms" » "modified time approximation algorithms", "modified diophantine approximation algorithms", "modified adaptive 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 df optimisation algorithm") OR ("modified quantile approximation algorithms"))~.
• Removing quotes may allow a broader search: (( modified df optimisation algorithm ) or ( modified quantile approximation algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified df optimisation algorithm") or ("modified quantile approximation algorithms"))*.