Perhaps you should try some spelling variations:
optimisation algorithmss » optimisation algorithm, estimation algorithm
optimization algorithms » optimisation algorithm, estimation algorithm, optimized algorithms
estimation algorithms » estimation algorithm, optimisation algorithm, approximation algorithms
_ optimisation » _ optimization

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

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