Perhaps you should try some spelling variations:
optimisation algorithm » optimization algorithms, estimation algorithm, estimation algorithms
emotion algorithm » evolution algorithm, estimation algorithm, predation algorithm
learning emotion » learning method
df optimisation » _ optimisation, _ optimization, qoe optimization
modified df » modified _, modified adam, modified bi1

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( machine learning emotion algorithm ) OR ( modified df optimisation algorithm ))~".
• Adding a wildcard symbol may retrieve word variants: (( machine learning emotion algorithm ) OR ( modified df optimisation algorithm ))*.