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