Perhaps you should try some spelling variations:
optimization algorithm » optimization algorithms, optimisation algorithm, estimation algorithm
modified learning » mobile learning, modified caging
emotion algorithm » evolution algorithm, estimation algorithm, predation algorithm
designed network » defined network
learning emotion » learning method

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

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