Perhaps you should try some spelling variations:
optimization algorithms » optimisation algorithm, estimation algorithms, estimation algorithm
optimized algorithms » optimized algorithm, optimizer algorithms
attribute optimized » attribute optimization
qoe optimization » game optimization, _ optimization, stage optimization

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( attribute optimized algorithms ) or ( qoe optimization algorithms ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( attribute optimized algorithms ) OR ( qoe optimization algorithms )).
• Adding a wildcard symbol may retrieve word variants: (( attribute optimized algorithms ) or ( qoe optimization algorithms ))*.