Perhaps you should try some spelling variations:
estimation algorithms » estimation algorithm, optimization algorithms, optimisation algorithm
optimizer algorithms » optimized algorithms, optimization algorithms
optimized algorithm » optimized algorithms
response estimation » response optimization, pose estimation, response association

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

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