Perhaps you should try some spelling variations:
"modified multiobjective optimization algorithm" » "modified multiobjective optimization algorithms", "modified multiobjective optimisation algorithm", "modified multiobjective estimation algorithm"
"code control case algorithm" » "mode control case algorithm", "case control case algorithm", "order control case algorithm", "code control based algorithm", "code control state algorithm", "code control a algorithm"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("code control case algorithm") or ("modified multiobjective optimization algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("code control case algorithm") OR ("modified multiobjective optimization algorithm")).
• Removing quotes may allow a broader search: (( code control case algorithm ) or ( modified multiobjective optimization algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("code control case algorithm") or ("modified multiobjective optimization algorithm"))*.