Perhaps you should try some spelling variations:
"modified orca predation algorithm" » "modified orca predators algorithm", "modified orca estimation algorithm", "modified dorca predation algorithm", "modified orcad predation algorithm", "modified ohca predation algorithm"
"modified invasive evolution algorithm" » "modified invasive solution algorithm", "modified invasive evolutionary algorithm", "modified invasive convolution algorithms", "modified invasive ventilation algorithm", "modified passive evolution algorithm"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("modified orca predation algorithm") or ("modified invasive evolution algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified orca predation algorithm") OR ("modified invasive evolution algorithm")).
• Removing quotes may allow a broader search: (( modified orca predation algorithm ) or ( modified invasive evolution algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("modified orca predation algorithm") or ("modified invasive evolution algorithm"))*.