Perhaps you should try some spelling variations:
optimization algorithms » optimisation algorithm, estimation algorithms, estimation algorithm
passive optimization » bayesian optimization, game optimization, policy optimization
solution algorithm » evolution algorithm, convolution algorithms, evolutionary algorithm
modified learning » mobile learning, modified caging
learning solution » learning convolution, learning emotion
modified passive » modified adaptive

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

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