Perhaps you should try some spelling variations:
gradation algorithm » predation algorithm, estimation algorithm
machine graining » machine learning
graining methods » learning methods, learning method, making methods
based gradation » based evaluation, based prediction
modified based » modified male

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( modified based gradation algorithm ) or ( machine graining methods algorithm ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( modified based gradation algorithm ) OR ( machine graining methods algorithm )).
• Adding a wildcard symbol may retrieve word variants: (( modified based gradation algorithm ) or ( machine graining methods algorithm ))*.