Perhaps you should try some spelling variations:
learning estimation » learning emotion, lighting estimation
evolution algorithm » solution algorithm, evolutionary algorithm, convolution algorithms
invasive evolution » invasive ventilation
modified learning » mobile learning, modified caging
modified invasive » modified passive

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

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