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