Perhaps you should try some spelling variations:
"modified adam optimization algorithms" » "modified adam optimisation algorithm", "modified adam estimation algorithms", "modified adam estimation algorithm", "modified game optimization algorithms", "modified stage optimization algorithms", "modified _ optimization algorithms", "modified df optimization algorithms", "modified near optimization algorithms"
"modified orca predation algorithm" » "modified orca predators algorithm", "modified orca estimation algorithm", "modified dorca predation algorithm", "modified orcad predation algorithm", "modified ohca predation algorithm"

Try widening your search to All Fields.

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 adam optimization algorithms"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified orca predation algorithm") OR ("modified adam optimization algorithms")).
• Removing quotes may allow a broader search: (( modified orca predation algorithm ) or ( modified adam optimization algorithms )).
• Adding a wildcard symbol may retrieve word variants: (("modified orca predation algorithm") or ("modified adam optimization algorithms"))*.