Perhaps you should try some spelling variations:
optimization algorithm » optimization algorithms, optimisation algorithm, estimation algorithm
method algorithm » mom algorithm
qoe optimization » game optimization, _ optimization, stage optimization
modified qoe » modified male, modified _, modified bi1
core using » care nursing

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( ((core using) OR (code using)) method algorithm ) or ( modified qoe optimization algorithm ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( ((core using) OR (code using)) method algorithm ) OR ( modified qoe optimization algorithm ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ((core using) OR (code using)) method algorithm ) or ( modified qoe optimization algorithm ))*".