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