Perhaps you should try some spelling variations:
"modified multiobjective optimization algorithms" » "modified multiobjective optimisation algorithm", "modified multiobjective estimation algorithm", "modified multiobjective optimized algorithms"
"modified motion estimation algorithms" » "modified motion estimation algorithm", "modified motion optimisation algorithm", "modified motion approximation algorithms", "modified notion estimation 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 motion estimation algorithms") OR ("modified multiobjective optimization algorithms"))~.
• Removing quotes may allow a broader search: (( modified motion estimation algorithms ) or ( modified multiobjective optimization algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified motion estimation algorithms") or ("modified multiobjective optimization algorithms"))*.