Perhaps you should try some spelling variations:
optimization algorithmssss » optimisation algorithm
optimization algorithms » optimisation algorithm, estimation algorithms, estimation algorithm
objective optimization » multiobjective optimization
qoe optimization » game optimization, _ optimization, stage optimization
modified qoe » modified male, modified _, 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 qoe optimization algorithms ) or ( modified objective optimization algorithmssss ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( modified qoe optimization algorithms ) OR ( modified objective optimization algorithmssss )).
• Adding a wildcard symbol may retrieve word variants: (( modified qoe optimization algorithms ) or ( modified objective optimization algorithmssss ))*.