Perhaps you should try some spelling variations:
optimisation algorithm » optimization algorithms, estimation algorithm, estimation algorithms
sphere approximation » average approximation, time approximation
pose optimisation » qoe optimization, _ optimisation, pose estimation
one approximation » time approximation, _ approximation, rough approximations

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( pose optimisation algorithm ) or ( ((sphere approximation) OR (one approximation)) algorithms ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( pose optimisation algorithm ) OR ( ((sphere approximation) OR (one approximation)) algorithms )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( pose optimisation algorithm ) or ( ((sphere approximation) OR (one approximation)) algorithms ))".
• Adding a wildcard symbol may retrieve word variants: (( pose optimisation algorithm ) or ( ((sphere approximation) OR (one approximation)) algorithms ))*.