Perhaps you should try some spelling variations:
"modified parameters optimization algorithms" » "modified parameters optimisation algorithm", "modified parameters estimation algorithms", "modified parameters estimation algorithm", "modified parameter optimization algorithms", "modified parameter estimation algorithms"
"modified positive convolution algorithms" » "modified positive evolution algorithm", "modified positive solution algorithm", "modified positive solutions algorithms", "modified passive convolution algorithms", "modified adaptive convolution algorithms"

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

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