Perhaps you should try some spelling variations:
parameters estimation » parameter estimation, parameter estimates, parameter optimization
solution algorithm » evolution algorithm, convolution algorithms, evolutionary algorithm
learning solution » learning convolution, learning emotion
mapping learning » machine learning, enabling learning

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

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