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