Perhaps you should try some spelling variations:
"modified multiobjective optimization algorithm" » "modified multiobjective optimization algorithms", "modified multiobjective optimisation algorithm", "modified multiobjective estimation algorithm"
"model learning emotion algorithm" » "model learning evolution algorithm", "model learning estimation algorithm", "model learning predation algorithm", "model learning method algorithm", "mobile learning emotion algorithm"

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