Perhaps you should try some spelling variations:
"modified pulses optimization algorithms" » "modified pulses optimisation algorithm", "modified pulses estimation algorithms", "modified pulses estimation algorithm", "modified policy optimization algorithms"
"modified delphi convolution algorithms" » "modified delphi evolution algorithm", "modified delphi solution 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 pulses optimization algorithms") or ("modified delphi convolution algorithms"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified pulses optimization algorithms") OR ("modified delphi convolution algorithms"))*.
• Removing quotes may allow a broader search: (( modified pulses optimization algorithms ) or ( modified delphi convolution algorithms ))*.