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