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 learning evolutionary algorithm" » "model learning evolution algorithm", "model learning solution algorithm", "mobile learning evolutionary algorithm"

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: (("model learning evolutionary algorithm") or ("modified multiobjective optimisation algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("model learning evolutionary algorithm") OR ("modified multiobjective optimisation algorithm")).
• Removing quotes may allow a broader search: (( model learning evolutionary algorithm ) or ( modified multiobjective optimisation algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("model learning evolutionary algorithm") or ("modified multiobjective optimisation algorithm"))*.