Perhaps you should try some spelling variations:
estimation algorithms » estimation algorithm, optimization algorithms, optimisation algorithm
location estimation » motion estimation
emotion algorithm » evolution algorithm, estimation algorithm, predation algorithm
modified location » modified carbon
mapping learning » machine learning, enabling learning
learning emotion » learning method

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: (( mapping learning emotion algorithm ) OR ( modified location estimation algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (( mapping learning emotion algorithm ) or ( modified location estimation algorithms ))*.