Perhaps you should try some spelling variations:
optimization algorithm » optimization algorithms, optimisation algorithm, estimation algorithm
market optimization » game optimization, parameter optimization, market capitalization
over optimisation » _ optimisation
qoe optimization » game optimization, _ optimization, stage optimization

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: (( ((over optimisation) OR (qoe optimization)) algorithm ) OR ( market optimization algorithm ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ((over optimisation) OR (qoe optimization)) algorithm ) or ( market optimization algorithm ))~".
• Adding a wildcard symbol may retrieve word variants: (( ((over optimisation) OR (qoe optimization)) algorithm ) or ( market optimization algorithm ))*.