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