Perhaps you should try some spelling variations:
optimization algorithms » optimisation algorithm, estimation algorithms, estimation algorithm
sphere estimation » pose estimation
does optimization » qoe optimization, robust optimization, _ optimization
pulse estimation » pulses estimation, pose estimation, risk estimation

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: (( ((pulse estimation) OR (sphere estimation)) algorithm ) OR ( does optimization algorithms ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ((pulse estimation) OR (sphere estimation)) algorithm ) or ( does optimization algorithms ))~".
• Adding a wildcard symbol may retrieve word variants: (( ((pulse estimation) OR (sphere estimation)) algorithm ) or ( does optimization algorithms ))*.