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