Perhaps you should try some spelling variations:
"modified objective optimized algorithms" » "modified objective optimized algorithm", "modified objective optimizer algorithms", "modified objective optimization algorithms", "modified objective optimal algorithms"
"machine learning solution algorithm" » "machine learning evolution algorithm", "machine learning convolution algorithms", "machine learning evolutionary algorithm", "machine learning convolution algorithm", "machine learning emotion algorithm"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified objective optimized algorithms\") OR (\"machine learning solution algorithm\"))~".
• Removing quotes may allow a broader search: (( modified objective optimized algorithms ) OR ( machine learning solution algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified objective optimized algorithms") OR ("machine learning solution algorithm"))*.