Perhaps you should try some spelling variations:
"defined network optimization algorithms" » "defined network optimisation algorithm", "defined network estimation algorithms", "defined network estimation algorithm", "designed network optimization algorithms"
"modified adaptive convolution algorithms" » "modified adaptive evolution algorithm", "modified adaptive solution algorithm", "modified adaptive construction algorithms", "modified adaptive ventilation algorithms", "modified passive convolution algorithms"

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