Perhaps you should try some spelling variations:
"modified objective convolution algorithms" » "modified objective evolution algorithm", "modified objective solution algorithm"
"modified nacl estimation algorithms" » "modified nacl estimation algorithm", "modified nacl optimization algorithms", "modified nacl optimisation algorithm", "modified male estimation algorithms", "modified near estimation algorithms", "modified orca estimation 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 nacl estimation algorithms") OR ("modified objective convolution algorithms"))~.
• Removing quotes may allow a broader search: (( modified nacl estimation algorithms ) or ( modified objective convolution algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified nacl estimation algorithms") or ("modified objective convolution algorithms"))*.