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"
"machines learning convolution algorithms" » "machines learning evolution algorithm", "machines learning solution algorithm", "machine learning convolution algorithms", "active learning convolution algorithms", "mapping learning convolution algorithms"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("machines learning convolution algorithms") or ("modified objective optimization algorithms"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("machines learning convolution algorithms") OR ("modified objective optimization algorithms")).
• Removing quotes may allow a broader search: (( machines learning convolution algorithms ) or ( modified objective optimization algorithms )).
• Adding a wildcard symbol may retrieve word variants: (("machines learning convolution algorithms") or ("modified objective optimization algorithms"))*.