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

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: (( cover ((estimation algorithms) OR (optimisation algorithm)) ) OR ( _ optimizer algorithms ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( cover ((estimation algorithms) OR (optimisation algorithm)) ) or ( _ optimizer algorithms ))~".
• Adding a wildcard symbol may retrieve word variants: (( cover ((estimation algorithms) OR (optimisation algorithm)) ) or ( _ optimizer algorithms ))*.