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