Perhaps you should try some spelling variations:
"modified multiobjective optimization algorithms" » "modified multiobjective optimisation algorithm", "modified multiobjective estimation algorithms", "modified multiobjective estimation algorithm"
"modified df solution algorithms" » "modified df solution algorithm", "modified df evolution algorithm", "modified df convolution algorithms", "modified _ solution algorithms", "modified adam solution algorithms", "modified bi1 solution algorithms", "modified drug solution algorithms", "modified up solutions algorithms"

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

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