Perhaps you should try some spelling variations:
"modified notion optimization algorithms" » "modified notion optimisation algorithm", "modified notion estimation algorithms", "modified notion estimation algorithm", "modified network optimization algorithms", "modified policy optimization algorithms", "modified allocation optimization algorithms"
"model learning predation algorithm" » "model learning predators algorithm", "model learning estimation algorithm", "model learning prediction algorithm", "model learning emotion algorithm", "mobile learning 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: (("model learning predation algorithm") or ("modified notion optimization algorithms"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("model learning predation algorithm") OR ("modified notion optimization algorithms")).
• Removing quotes may allow a broader search: (( model learning predation algorithm ) or ( modified notion optimization algorithms )).
• Adding a wildcard symbol may retrieve word variants: (("model learning predation algorithm") or ("modified notion optimization algorithms"))*.