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

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: (("modified objective optimized algorithm") or ("mapping learning evolution algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified objective optimized algorithm") OR ("mapping learning evolution algorithm")).
• Removing quotes may allow a broader search: (( modified objective optimized algorithm ) or ( mapping learning evolution algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("modified objective optimized algorithm") or ("mapping learning evolution algorithm"))*.