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