Perhaps you should try some spelling variations:
"modified motion optimization algorithms" » "modified motion optimisation algorithm", "modified motion estimation algorithms", "modified motion estimation algorithm", "modified policy optimization algorithms", "modified allocation optimization algorithms"
"modified objective predation algorithm" » "modified objective allocation algorithm", "modified objective predators algorithm", "modified objective estimation algorithm"

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 predation algorithm") OR ("modified motion optimization algorithms"))~.
• Removing quotes may allow a broader search: (( modified objective predation algorithm ) or ( modified motion optimization algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified objective predation algorithm") or ("modified motion optimization algorithms"))*.