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