Perhaps you should try some spelling variations:
optimization algorithms » optimisation algorithm, estimation algorithms, estimation algorithm
mental algorithm » genetic algorithm, control algorithm, mppt algorithm
df optimization » _ optimization, qoe optimization, _ optimisation
using mental » using metal, nursing mental, using medical
modified df » modified _, modified adam, modified bi1

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: (( (code OR core) using mental algorithm ) OR ( modified df optimization algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (( (code or core) using mental algorithm ) or ( modified df optimization algorithms ))*.