Perhaps you should try some spelling variations:
"modified _ optimization algorithm" » "modified _ optimization algorithms", "modified _ optimisation algorithm", "modified _ estimation algorithm"
"modified saline evolution algorithm" » "modified saline solution algorithm", "modified saline evolutionary algorithm", "modified saline convolution algorithms", "modified sales evolution algorithm", "modified time evolution algorithm", "modified caging evolution algorithm", "modified male evolution algorithm", "modified passive evolution algorithm"

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 saline evolution algorithm") OR ("modified _ optimization algorithm"))~.
• Removing quotes may allow a broader search: (( modified saline evolution algorithm ) or ( modified _ optimization algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified saline evolution algorithm") or ("modified _ optimization algorithm"))*.