Perhaps you should try some spelling variations:
predators algorithm » predation algorithm
objective optimized » objective optimal, objective optimization
optimized algorithm » optimized algorithms, optimizer algorithms
risk predators » marine predators
modified risk » modified bi1

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( modified risk predators algorithm ) or ( modified objective optimized algorithm ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( modified risk predators algorithm ) OR ( modified objective optimized algorithm )).
• Adding a wildcard symbol may retrieve word variants: (( modified risk predators algorithm ) or ( modified objective optimized algorithm ))*.