Perhaps you should try some spelling variations:
optimisation algorithm » optimization algorithms, estimation algorithm, estimation algorithms
dose approximation » time approximation, _ approximation, rough approximations
one approximation » time approximation, _ approximation, rough approximations
_ optimisation » _ 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: (( ((dose approximation) OR (one approximation)) algorithms ) OR ( _ optimisation algorithm ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ((dose approximation) OR (one approximation)) algorithms ) or ( _ optimisation algorithm ))~".
• Adding a wildcard symbol may retrieve word variants: (( ((dose approximation) OR (one approximation)) algorithms ) or ( _ optimisation algorithm ))*.