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