Perhaps you should try some spelling variations:
"modified objective optimization algorithmsss" » "modified objective optimization algorithms", "modified objective optimisation algorithm", "modified objective estimation algorithms", "modified multiobjective optimization algorithmsss"
"modified objective evolution algorithm" » "modified objective evolutionary algorithm", "modified objective allocation algorithm", "modified objective solution algorithm", "modified objective convolution algorithms"

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