Perhaps you should try some spelling variations:
optimization algorithms » optimisation algorithm, estimation algorithms, estimation algorithm
method algorithm » mom algorithm
df optimization » _ optimization, qoe optimization, _ optimisation
control method » control methods
code control » mode control, case control, order control
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 control method algorithm ) OR ( modified df optimization algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (( code control method algorithm ) or ( modified df optimization algorithms ))*.