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