Perhaps you should try some spelling variations:
"modified time convolution algorithms" » "modified time evolution algorithm", "modified time solution algorithm", "modified time evolution algorithms", "modified bi1 convolution algorithms", "modified male convolution algorithms"
"defined network optimization algorithm" » "defined network optimization algorithms", "defined network optimisation algorithm", "defined network estimation algorithm"

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

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