Perhaps you should try some spelling variations:
optimization algorithms » optimisation algorithm, estimation algorithms, estimation algorithm
machines graining » machine learning
graining methods » learning methods, learning method, making methods
modified network » certified network, defined network, modified near

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

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