Perhaps you should try some spelling variations:
optimization algorithm » optimization algorithms, optimisation algorithm, estimation algorithm
df optimization » _ optimization, qoe optimization, _ optimisation
open algorithm » mppt algorithm, our algorithm, driven algorithm
modified df » modified _, modified adam, modified bi1
core using » code using, care nursing
using open » using opencl, using one

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