Perhaps you should try some spelling variations:
"modified notion approximation algorithms" » "modified network approximation algorithms", "modified time approximation algorithms", "modified one approximation algorithms"
"modified trained evolution algorithm" » "modified trained solution algorithm", "modified trained evolutionary algorithm", "modified trained convolution algorithms", "modified time evolution algorithm", "modified trained convolutional algorithm", "modified traces evolution algorithm"

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

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