Perhaps you should try some spelling variations:
optimization algorithm » optimization algorithms, optimisation algorithm, estimation algorithm
qoe optimization » game optimization, _ optimization, stage optimization
pre algorithm » mppt algorithm, qspr algorithm, mom algorithm
modified qoe » modified male, modified _, modified bi1
_ algorithm » _ algorithms, _ algorithmic, mom algorithm
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 ((pre algorithm) OR (_ algorithm)) ) OR ( modified qoe optimization algorithm ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( code using ((pre algorithm) OR (_ algorithm)) ) or ( modified qoe optimization algorithm ))~".
• Adding a wildcard symbol may retrieve word variants: (( code using ((pre algorithm) OR (_ algorithm)) ) or ( modified qoe optimization algorithm ))*.