Perhaps you should try some spelling variations:
approximation algorithm » approximation algorithms
convolution algorithms » evolution algorithm, solution algorithm
saline convolution » saline solution, learning convolution
one approximation » time approximation, _ approximation, rough approximations
modified saline » modified caging, modified male, modified passive
modified one » modified male, modified near, modified orca

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( modified saline convolution algorithms ) OR ( modified one approximation algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (( modified saline convolution algorithms ) or ( modified one approximation algorithm ))*.