Perhaps you should try some spelling variations:
optimization algorithm » optimization algorithms, optimisation algorithm, estimation algorithm
optimized algorithm » optimized algorithms, optimizer algorithms
modified network » certified network, defined network, modified near
df optimized » _ optimized, _ optimize
modified df » modified _, modified adam, modified bi1

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

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