Perhaps you should try some spelling variations:
"modified multiobjective optimisation algorithms" » "modified multiobjective optimization algorithms", "modified objective optimization algorithms", "modified multiobjective optimisation algorithm", "modified multiobjective estimation algorithms", "modified multiobjective estimation algorithm"
"modified bi1 optimization algorithms" » "modified bi1 optimisation algorithm", "modified bi1 estimation algorithms", "modified bi1 estimation algorithm", "modified _ optimization algorithms", "modified qoe optimization algorithms", "modified game optimization 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 multiobjective optimisation algorithms") OR ("modified bi1 optimization algorithms"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified multiobjective optimisation algorithms\") OR (\"modified bi1 optimization algorithms\"))".
• Removing quotes may allow a broader search: (( modified multiobjective optimisation algorithms ) OR ( modified bi1 optimization algorithms )).
• Adding a wildcard symbol may retrieve word variants: (("modified multiobjective optimisation algorithms") OR ("modified bi1 optimization algorithms"))*.