Perhaps you should try some spelling variations:
"modified multiobjective optimisation algorithm" » "modified multiobjective optimization algorithm", "modified objective optimization algorithm", "modified multiobjective optimization algorithms", "modified multiobjective estimation algorithm", "modified multiobjective estimation algorithms"
"model using metal algorithm" » "code using metal algorithm", "models nursing metal algorithm", "powder using metal algorithm", "model using real algorithm", "model nursing mental algorithm", "model using medical 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 multiobjective optimisation algorithm") or ("model using metal algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified multiobjective optimisation algorithm") OR ("model using metal algorithm")).
• Removing quotes may allow a broader search: (( modified multiobjective optimisation algorithm ) or ( model using metal algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("modified multiobjective optimisation algorithm") or ("model using metal algorithm"))*.