Perhaps you should try some spelling variations:
"defined network optimization algorithms" » "defined network estimation algorithms", "defined network estimation algorithm", "defined network optimized algorithms", "designed network optimization algorithms"
"modified notion optimisation algorithm" » "modified notion estimation algorithm", "modified notion estimation algorithms"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("defined network optimization algorithms") or ("modified notion optimisation algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("defined network optimization algorithms") OR ("modified notion optimisation algorithm"))*.
• Removing quotes may allow a broader search: (( defined network optimization algorithms ) or ( modified notion optimisation algorithm ))*.