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

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 predation algorithm") OR ("modified df optimisation algorithms"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified objective predation algorithm\") OR (\"modified df optimisation algorithms\"))".
• Removing quotes may allow a broader search: (( modified objective predation algorithm ) OR ( modified df optimisation algorithms )).
• Adding a wildcard symbol may retrieve word variants: (("modified objective predation algorithm") OR ("modified df optimisation algorithms"))*.