Perhaps you should try some spelling variations:
optimization algorithms » optimisation algorithm, estimation algorithms, estimation algorithm
df optimization » _ optimization, qoe optimization, _ optimisation
raw algorithm » adam algorithm, mom algorithm, our algorithm
_ algorithm » _ algorithms, _ algorithmic, mom algorithm
modified df » modified _, modified adam, modified bi1
code » core

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 using ((raw algorithm) OR (_ algorithm)) ) OR ( modified df optimization algorithms ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( code using ((raw algorithm) OR (_ algorithm)) ) or ( modified df optimization algorithms ))~".
• Adding a wildcard symbol may retrieve word variants: (( code using ((raw algorithm) OR (_ algorithm)) ) or ( modified df optimization algorithms ))*.